come of vs come from

[Szky09]

he comes of / comes from a wealthy family
what is the different?
thanks!

[JimmyAL]

When you say "come of" you mean that something resulted in a way or another. Some good examples would be:
Nothing came of his ambitions.
He comes of a strong samurai clan.
"Come from" can be used when referring to where a person was compared to where s/he is now (She came from Washington) but it can also be used in situations like "He comes from a wealthy family".
The structures seem to be very alike, the only difference I could find is that "come of" generally refers to things or people that "issued" while "come from" generally refers to a place!

[Daedalus9000]

"He comes of a strong samurai clan" is not something I would expect to hear from a native speaker. "He comes from a strong samurai clan" would be correct.

"...come from..." is a statement about where something originates: I come from the US, he comes from money
"...come of..." is a statement about a consequence, where something happened and the result is what you are talking about: I talked with him about buying my car, but nothing will come of it.