From HouseofNames.com

And nothing on Boza. There's rarely anything on Boza.

The interesting thing is that there's semi-specific name-origins, and links to historical names that could be followed up-- though the etymology of Holcomb is different than it has been elsewhere that I've seen.

What's in a name? Gain

GAIN

English: variant of Gaines.

Place of Origin	Gain Immigrants
Ireland	26
England	17
Germany	14
Great Britain	5
Mexico	4
France	2

Compiled by Ancestry.com from the New York Passenger Lists.

---> GAINES

1. English (of Norman origin): nickname for a crafty or ingenious person, from a reduced form of Old French engaine ‘ingenuity’, ‘trickery’ (Latin ingenium ‘native wit’). The word was also used in a concrete sense of a stratagem or device, particularly a trap.
2. This surname has also assimilated reduced variants of Welsh Gurganus.

op Places of Origin for Gaines

Place of Origin	Gaines Immigrants
Ireland	24
England	13
Scotland	8
Great Britain	5
Germany	3
Denmark	1

Compiled by Ancestry.com from the New York Passenger Lists.

Gain

(mom's dad's family)

We're pretty sure that Gain is a shortened form of something much more complex in Ireland; there have been at least three proposed spellings of related longer versions that all sound like O'gain-a-henny or something similar. We know that Grandpa's grandfather came over from Ireland, and we think it's from County Claire, which was apparently one of the places people came from, but not as frequently as from, say Cork, though that's another option (and one that may lead back to Scandanavia, eventually, as that's where all the Vikings stayed and integrated into the celtic culture). It's said it was around the Famine, but not necessarily because of it; some of the timing seems to be before or after, but as we don't know what the name was before Ellis Island, it's hard to say.

Mom'e given me the names of her grandfather and his brothers, who apparently scattered for some reason and basically never spoke to eachother again; there's the idea that one went North and one went out to Hollywood, and one stayed around New Jersey or Pensylvania, and one maybe went to Australia... scattered. Sounds a bit mythical, but we'll see how it pans out.

There's a town somewhere up north called Gain, I think...

At one point, through Edward, granfather's father, we we reable to find a branch of the family that had been in the states much longer than we think our branch has, who started far north and moved slowly south, eventually converging with our branch; that one goes back to the 1700s, but sort of scattered, without alot of names.