I do a lot of #OTD posts, but sometimes it’s hard to find reliable info about an obscure scientist.

This is my annual plea for help with theoretical physicist “Albert Einstein,” born #OTD in 1879. His contributions are minor but still of some interest to me personally.

You may have seen his work attributed to "Alfred Einstein,” "Albert Eisenstein," or similar. Any help you can provide digging up info on this little-known scholar is much appreciated.