I've been searching Ancestry for the record of my late grandmother's second marriage. I found the record of her first marriage easily. But there is nothing under her name (Sarah Zimmer) (maiden name Thomashefsky) or her second husband (Frank Kaplan). I believe he was divorced, although I can't find that record either. They got together in the early 1920s. My question is: How complete are Ancestry's marriage records? Is it possible that marriage records are lost or misplaced? In the alternative -- and this seems unlikely to me -- how common was it for immigrants to simply live together in that period of time? She is a dearly beloved lady, but I have to ask the question. She was a widow with a small child, and Frank had three children. 
Sherry Robinson, Albuquerque