I got remarried around that time.

A lady that bought the house 20 years ago may have since remarried.

But now that I'm re-married to Tracy, we're making a go of it as a dynamic duo.  

I'm now in the Northwest suburbs of Chicago, and remarried with a job downtown.  

Property is bought by a man with a wife and children.His wife dies.He later remarries and then he dies without a will (while still married to his second wife).There has not been any probate.

Mom remarried in 1998 and that bore no children, but the guy had two emancipated children.

Hi @Jeffrey Suarez, I'll do my best to provide some high level answers but some of these should be addressed by specialist you retain.1) Cap Gains: It sounds like you're divorce, not sure if remarried, but it's $250k for individuals and $500k for couples. 

She was married than divorced her husband, he moved on remarried and the deed was still in both of their names.

My Father is remarried for 17 years. 

Or you are scared survive spouse is going to remarry and not give anything to your childerns.