

I bought a new domain for my business and there was no trace of any old business name when researching connected to that domain. After about 6 months I received some data from an old client of theirs. It had a company name so I was able to let someone from that company know, as well the sender and I deleted the data before reading it. I guess you have to think what did you use it for, who might send data that identifies you etc. You never know who might buy it.
I remember reading an article but can’t find it now. A researcher bought tons old domains from government and local departments that had shut down or changed names, and managed to get some interesting information!
That was because the British Raj did not create birth records so there is no record to produce. Local villages in India did keep a form of record but it was normal to be off by a few months or sometimes people lied to get their kids into school early. Given his history and fame, it is unlikely to be off by more than a few years at most.
Don’t take away his achievements for some bureaucratic reason.