Post-Medieval London Research Articles

The impact of early childhood stressors on later growth in medieval and postmedieval London

AbstractThis research examined the relationship between linear enamel hypoplasia (LEH) and stature in medieval and postmedieval London cemeteries to determine whether individuals with LEH in their permanent dentition also exhibited shorter stature. Pathological and metric data for 87 adult individuals from the medieval East Smithfield Black Death cemetery and 136 adult individuals from the postmedieval St. Bride's Lower Churchyard Cemetery were used in this study. A two‐way ANOVA, a component of the general linear model (GLM), was run to compare LEH prevalence to maximum femoral length, while accounting for time period and sex. The results showed a significant association in both samples between presence of LEH and femur length in males. The association did not differ between cemeteries, indicating no temporal change in the relationship. Examination of the distribution suggests the association was stronger in males than in females, a possible indication of superior female buffering in these samples. This research provides a look at how environmental stressors in childhood may have permanent effects on growth in past populations while also attempting to better understand how males and females may differ in buffering against episodes of stress.

Highs and lows of frailty: skeletal frailty differentials among socioeconomic groups in Postmedieval London

Highs and lows of frailty: skeletal frailty differentials among socioeconomic groups in Postmedieval London

An epidemiological approach to the analysis of cribra orbitalia as an indicator of health status and mortality in medieval and post-medieval London under a model of parasitic infection.

Many individuals living in medieval and post-medieval London suffered issues with sanitation, food insecurity, infectious disease, and widespread exposure to parasites from a multitude of sources, causing increased risk of death for many inhabitants. We examine this stressful environment and its relationship with various demographic and temporal dimensions, using cribra orbitalia (CO) as an indicator of stress, to model an increased risk of dying under the expectations of our proposed parasitic model of infection. We analyze the relationship between CO and mortality across seven medieval and post-medieval cemeteries from London by the covariates of sex, status, and age-at-death. A survival analysis (Cox regression) and a binomial logit estimated hazard and odds ratios of dying with CO across age-at-death, sex, status, and time-period within single statistical models. In addition, we provide new Bayesian age-at-death estimates for post-medieval samples. The models show the rate of CO decreased over time and age-at-death, regardless of sex or status; post-medieval individuals were ~72% less likely to die with lesions than their medieval counterparts. Further, individuals with CO had ~1% decrease in risk of dying with CO per year of age. These results suggest increased mortality risk for those with lesions indicative of anemia (CO), and selective mortality of younger individuals during the medieval period. Despite sex-specific nutritional and occupational hazards, and status-based access to resources, the prevalence of CO was similar across sex and status, which suggests living with parasitic infection that caused anemia was an everyday reality for medieval and post-medieval Londoners.

Multidisciplinary investigations of the diets of two post-medieval populations from London using stable isotopes and microdebris analysis

This paper presents the first multi-tissue study of diet in post-medieval London using both the stable light isotope analysis of carbon and nitrogen and analysis of microdebris in dental calculus. Dietary intake was explored over short and long timescales. Bulk bone collagen was analysed from humans from the Queen’s Chapel of the Savoy (QCS) (n = 66) and the St Barnabas/St Mary Abbots (SB) (n = 25). Incremental dentine analysis was performed on the second molar of individual QCS1123 to explore childhood dietary intake. Bulk hair samples (n = 4) were sampled from adults from QCS, and dental calculus was analysed from four other individuals using microscopy. In addition, bone collagen from a total of 46 animals from QCS (n = 11) and the additional site of Prescot Street (n = 35) was analysed, providing the first animal dietary baseline for post-medieval London. Overall, isotopic results suggest a largely C3-based terrestrial diet for both populations, with the exception of QCS1123 who exhibited values consistent with the consumption of C4 food sources throughout childhood and adulthood. The differences exhibited in δ15Ncoll across both populations likely reflect variations in diet due to social class and occupation, with individuals from SB likely representing wealthier individuals consuming larger quantities of animal and marine fish protein. Microdebris analysis results were limited but indicate the consumption of domestic cereals. This paper demonstrates the utility of a multidisciplinary approach to investigate diet across long and short timescales to further our understanding of variations in social status and mobility.

Quantification of Interpersonal Violence in Skeletal Remains from Medieval and Post-Medieval London

Quantification of Interpersonal Violence in Skeletal Remains from Medieval and Post-Medieval London

More Harm than Healing? Investigating the Iatrogenic Effects of Mercury Treatment on Acquired Syphilis in Post-medieval London.

AbstractMercury was commonly used to treat syphilis in post-medieval Europe, but debate persists about whether it ameliorated infection or exacerbated it. As there are no in vitro studies on mercury’s effectiveness, Hg levels were characterized using an established technique, portable X-Ray Florescence Spectrometry (pXRF) in syphilitic skeletons (N=22) from six post-medieval London cemeteries. Levels were assessed against proxies for syphilitic infection severity (lesion type, episodic involvement, extent of involvement), oral health indicators, and age at death. The findings are equivocal, likely obfuscated by background poor oral health and high mortality, and cannot elucidate whether mercury ‘killed or cured’.

Hair as a Window on Diet and Health in Post-Medieval London: an isotopic analysis

Hair as a Window on Diet and Health in Post-Medieval London: an isotopic analysis

The long-term impact of developmental stress. Evidence from later medieval and post-medieval London (AD1117-1853).

Episodes of ill-health in childhood can predispose affected individuals to further periods of illness and early adult mortality. This study uses nonspecific indicators of stress to examine how growth disruptions during infancy/early childhood, and late childhood/early adolescence affected adult longevity in later medieval and post-medieval London. Hazards analysis was used to evaluate the effect of linear enamel hypoplasia (LEH) and the size of the anteroposterior (AP) and transverse (TR) diameters of the vertebral neural canal (VNC) on adult age-at-death. This was applied to skeletal samples from later medieval (n = 461) and post-medieval (n = 480) London. Growth disruptions during infancy/early childhood (LEH and AP VNC diameters) were not associated with longevity, or with impaired growth at later stages of development (TR VNC diameters). Growth disruptions during late childhood/early adolescence (TR VNC diameters) were associated with a significantly increased risk of adult mortality. Macroscopic hypoplasia represent short periods of stress during infancy/early childhood which did not disrupt future investments in growth or cause long-term damage to health. Small TR diameters represent chronic stress during late childhood/early adolescence which resulted in greater susceptibility to infections and increased risk of mortality. These interactions were influenced by sex and socioeconomic status, suggesting that socioeconomic circumstances in both childhood and adult life could influence exposure and resistance to stressors.

Diet and Dental Caries in Post-Medieval London

This paper explores the dentition of individuals excavated from two post-medieval London cemeteries. Individuals from Chelsea Old Church, a middle-class group, and St. Bride’s lower churchyard, a working-class group, were selected and studied. The relative dental status of each group was explored by determining the prevalence of individuals and teeth affected by dental caries. The overall dental status of both class groups was found to be poor; diet was the most likely causative factor. Access to cariogenic foods such as sugar and refined flour likely affected individuals’ dental status regardless of their social class.

Missing defects? A comparison of microscopic and macroscopic approaches to identifying linear enamel hypoplasia

Linear enamel hypoplasia (LEH), the presence of linear defects of dental enamel formed during periods of growth disruption, is frequently analyzed in physical anthropology as evidence for childhood health in the past. However, a wide variety of methods for identifying and interpreting these defects in archaeological remains exists, preventing easy cross-comparison of results from disparate studies. This article compares a standard approach to identifying LEH using the naked eye to the evidence of growth disruption observed microscopically from the enamel surface. This comparison demonstrates that what is interpreted as evidence of growth disruption microscopically is not uniformly identified with the naked eye, and provides a reference for the level of consistency between the number and timing of defects identified using microscopic versus macroscopic approaches. This is done for different tooth types using a large sample of unworn permanent teeth drawn from several post-medieval London burial assemblages. The resulting schematic diagrams showing where macroscopic methods achieve more or less similar results to microscopic methods are presented here and clearly demonstrate that "naked-eye" methods of identifying growth disruptions do not identify LEH as often as microscopic methods in areas where perikymata are more densely packed.

Historical and zooarchaeological evidence of horn-working in post-medieval London

The 1641 list of members of the Horners' Company, parish registers and apprentice rolls provide information on the location of the horn-working industry in east London, on family relationships and on how horners' careers may have developed. Sawn cattle horncores distinguish horn-working deposits from butchers' and tanners' waste. Horn waste was used as a cheap substitute for brick to line pits in workshops of other trades and in houses and to line field drains in the nearby countryside.

Linear enamel hypoplasias as indicators of systemic physiological stress: Evidence from two known age‐at‐death and sex populations from postmedieval London

Enamel hypoplasias are useful indicators of systemic growth disturbances during childhood, and are routinely used to investigate patterns of morbidity and mortality in past populations. This study examined the pattern of linear enamel hypoplasias in two different burial populations from 18th and 19th Century church crypts in London. Linear enamel hypoplasias on the permanent dentitions of individuals from the crypt of Christ Church, Spitalfields, were compared to enamel defects on the teeth of individuals from St. Bride's. The method used involves the identification of enamel defects at a microscopic level, and systemic perturbations are detected by matching hypoplasias among different tooth classes within each individual. The pattern of linear enamel hypoplasias was contrasted between individuals from the burial sites of Spitalfields and St. Bride's, between males and females, and between those aged less than 20 years of age and those aged over 20 years at death. Six different parameters were examined: frequency of linear enamel hypoplasias, interval between defects, duration of hypoplasias, age at first occurrence of hypoplasia, age at last occurrence of hypoplasia, and the percentage of enamel formation time taken up by growth disturbances. All individuals in the study displayed linear enamel hypoplasias, with up to 33% of total visible enamel formation time affected by growth disruptions. Multiple regression analysis indicated a number of significant differences in the pattern of enamel hypoplasias. Individuals from Spitalfields had shorter intervals between defects and greater percentages of enamel formation time affected by growth disturbances than did individuals from St. Bride's. Females had greater numbers of linear enamel hypoplasias, shorter intervals between defects, and greater percentages of enamel formation time affected by growth disturbances than males. There were also differences in the pattern of enamel hypoplasias and age at death in this study. Individuals who died younger in life had an earlier age at first occurrence of enamel hypoplasia than those who survived to an older age. The pattern of enamel hypoplasias detected in this study was influenced by tooth crown geometry and tooth wear such that most defects were found in the midcrown and cervical regions of the teeth, and greater numbers of defects were identified on the anterior teeth. Differences in sensitivity of the parameters used for the detection of enamel hypoplasias were found in this study. The percentage of visible enamel formation time affected by growth disturbances was the parameter that identified the greatest number of significant differences among the subgroups examined.

Sex Differences in Dental Caries Rates With the Origin of Agriculture in South Asia

L'auteur rapporte les resultats de recherches en pathologie dentaire effectuees sur des representants des populations prehistoriques du subcontinent indien, afin de determiner les variations de taux de caries, et de maladies dentaires en general selon que l'individu est de sexe feminin ou masculin, et d'identifier la nature de ces differences

Continuity and Change in the Urban House: Developments in Domestic Space Organisation in Seventeenth-Century London

The object of this article is to present the main findings of a study of the functional organisation of the house in postmedieval London. It will also discuss a formal approach to plan analysis that is considered to have wide application in the comparative study of domestic space.