Here we have A.E. Hayward's Great Caesar's Ghost! And Great Caesar's Goat! I'll concede that Hayward is not exactly on the same plane as McCay and Herriman, but he does have a place in the history books as the first cartoonist to give us a regular syndicated feature centered on working women with Somebody's Stenog.
Great Caesar's Ghost! And Great Caesar's Goat! is a Sunday strip that follows the exploits of Julius Caesar who is living in a Rome that has more than a passing resemblance to contemporary society (of the mid 1910's anyway). This setting features suffrage parades and the strange fashion statements involving the ankles of the fairer sex among other things. Julius himself is less the figure you might remember from history class, and more the sort who might fib to his wife to sneak out with the fellas.
By A.E. Hayward