I wouldn't worry too much about the age thing, my great great grandfather took a little bit off his age every time he and his wife had another child; by the time they had their last, he was 10 years younger than her and considering she was 22 when they married... And then there was my 85 year old ancestor who took 25 years off his age come census time. The point is, sometimes even official records aren't accurate as to people's details. I guess the thing is, this is the right couple, and you are most likely to get past your brick wall by obtaining the respective death printouts.
Craig.