I have been divorced twice. #1 was 10 years ago and #2 was last year. The problem is that I dont remember much about the #1 divorce because I was only 18 at the time and the marriage lasted for just few months (it was not in U.S. - it was in Canada). I dont even remember the DOB of that spouse because it's been SO long. I cannot get his DOB from the courthouse because they dont give out personal info like that in Canada, plus I cannot leave U.S. at the moment while AOS is processing.
I'm just curious to know if USCIS will ask about details of former spouse #1? What if I dont have all the answers? On my G325A, I wrote "Not known" in the DOB field for former spouse #1. FYI - I've never been sponsored to immigrate to U.S. by any of my former spouses. This is the first time.