Mohammed

The worst of letting the learned gentry bully us out of our traditional Mahometan & Mahomet ... is this: no sooner have we tried to be good & learnt to say, or at least write, Mohammed than they are fired with zeal to get us a step or two further on the path of truth, which at present seems likely to end in Muhammad with a dot under the h .... [H.W. Fowler, "A Dictionary of Modern English Usage," 1926]