Within the framework elaborated by the late Professor Lionel Guierre (1921–2001), who pioneered a new school of thought in the study of English phonology, this paper sets out to disprove one of the founding principles of Chomsky and Halle’s theories (also pre-eminent in Halle and Keyser’s later works), namely the premise that the English stress system is, to a great degree, modelled on Classical Latin metrical rules (dichotomy between prefinal heavy syllables entailing penultimate stressing and prefinal light syllables entailing antepenultimate stressing). The first part proposes an overview of L. Guierre’s theoretical framework, essentially based on morphology and syntactic categories, backed up with our own contributions, notably on the role of affixes in stress assignment. A one-page, three-tier (syntactic, morphological and segmental) algorithmic table, capable of accounting for all primary stress distribution rules in contemporary English, endeavors to encapsulate the gist of the phonological system we advocate. In conformity with the methodology of the Guierrian school, all the governing principles and findings presented here are backed up by ample statistical work in the form of samples and inventories extracted from computerised British English phonetic corpora, and more particularly from Daniel Jones’s English Pronouncing Dictionary (12th Ed.). At the end of this recapitulation of the Guierrian stress theory, we come to the conclusion that syllable-weight (except in the case of prefinal consonant clusters) is not a determining factor of contemporary English phonology. In the second part, we propose a diachronic study of the Romance/Germanic conflict which, following the Norman Conquest, led to the formation of the English phonological system as we know it today. In the course of our historical observations, we show that Latin could not have been the underlying force in this process. Further examination of affixes, more particularly in relation to neutral derivation (stress preservation) and secondary stress positioning, also puts paid to the idea that Romance stressing principles eventually supplanted the Germanic stressing dynamics of the English language. In the conclusion to our paper, we express our conviction that English has inherited not one but several phonologies, whose workings are determined by morphology and word-length, but also by learned or foreign word characteristics, being thus the product of a merging process between Romance mechanisms applying to borrowings and learned vocabulary and the prevailing Germanic dynamics for more ordinary vocabulary, as borne out by the fact that most suffixes of the English language actually entail stress preservation.