Joseph had a brother named Steve who has a grandson named M.K..
He’s not a relative of Stalin. He was born in the month Stalin died, so his father, a politician, named him after Stalin. How that became his last name instead of his first, I don’t know.
I’m reminded of families in Africa or South America or elsewhere who named one son King and the other one Kaiser or one son Winston and the other Adolf or Hitler. Maybe he has a brother named Eisenhower.