ooo, i loved I, Claudius too.
for those of you who like Sott's Ivanhoe, you might want to try his Quentin Durwood, if you haven't already.
some others; The Jewel in the Crown, The Golden Strangers by Henry Treece ("Set in the grey, twilight world of the Stone Age, the story of a young prince—Garroch—who tries to repel the invasion of Britain by the 'Golden Strangers'"), The Lyre Player, The Name of the Rose and Baudolino by Umberto Eco.
my mom recommends Antonia Fraser and Morgan Llewellyn.
o, and the Brother Cadfael stories are good too.