A list of phrases about peoples' names
Most idiomatic phrases are figurative but some refer to people, real or imaginary, by name. Here's a selection:
Alas, poor Yorick! I knew him, Horatio
Before you can say Jack Robinson
Here lies one whose name is writ in water
If the mountain will not come to Muhammad, then Muhammad must go to the mountain
Jack of all trades, master of none
Oh, they have slain the Earl of Moray and Lady Mondegreen
Richard of York gave battle in vain