The level scheme of $^{191}\mathrm{Au}$ was considerably extended to high spin using $\ensuremath{\gamma}$ spectroscopy with the Eurogam-II array and internal conversion measurements with the Orsay electron spectrometer. Several bands that appear as strongly coupled were associated with low-$\ensuremath{\Omega}$ configurations in $^{191}\mathrm{Au}$. Using total routhian surface and cranked shell model calculations it was shown that these bands have a rotation-aligned nature and are most likely generated by the nonaxiallity of the nucleus induced by the odd proton. The predictions for the presence of such bands in $^{191}\mathrm{Au}$ and in the oblate nuclei in the Pt-Au-Hg region found excellent agreement with the experimental data, as well as the predictions for their alignments and band-crossing frequencies in $^{191}\mathrm{Au}$.