We are talking about people born before 1910 here. Friends and acquaintances are all dead by definition. Drivers license won't come into play for decades. Other mid-life documents like marriage are also going to be decades later.
It's a hard problem. Especially when identity fraud for other reasons may be involved (a chield taking the identity of a parent to bypass inheritance taxes).
We need a biological test. Is there a biological marker that can attest of someone's age?
No, especially when you'd expect that the same qualities that might allow someone to live a very long time would also make them appear "biologically" younger. We don't have rings like trees.