Originally Posted by
cordelli
Weird little sidetrack, apparently my father's parents have the same SSN just one digit is different. I didn't know that either.
You can look up deceased people's ssn's ancestory website - which front ends the SSI datebase
http://ssdi.rootsweb.ancestry.com/
Not at all unusual. Given the timeframe, they likely got their numbers from the same place at the same time. My sister and I are one digit apart for the same reason -- my parents filed for our numbers when we were kids (before the IRS required it).