User blog:LemonFairy/How much do you guys put into your OCs?

I'm asking, because I was working on a character profile earlier. I was determining what color eyes she had (they changed about four times before I finally settled on a green). To come to the conclusion of her eye color I:

-Looked up the origin of her last name (Davis, picked at random)

-Research where in the world green eyes are most common. (Welsh females, it seems.)

-Determined that her grandmother's maiden name was much different than this last name and that it was Welsh in origin

-Somehow wrote family history going back essentially three generations.

There was a part of my mind that went "whoooa MAJOR overboard, kid." I can tell you when, down to the second, her elder twin brothers were born. I can tell you all sorts of ridiculous, unnedded background about her family, such as the fact that her mother is the youngest of four kids - two boys and two girls - and the elder son was killed in a building bombing three years after the OC was born. I have no idea if any of this info will ever be important, and the fact that I actually bothered made me wonder if I'm really crazy of if any of you guys both with this much.