The Einstein family was something, with brother Albert Brooks having his own interesting career, and father Harry Parke. I didn’t know who Parke was until running into him as Parkyakarkus, on TCM in one of the few films he made as the English-mangling Greek diner owner; he was well known for the character on the radio. He died of a heart attack while performing at a Friar’s club roast of Lucy and Desi, collapsing onto Milton Berle’s shoulder; folks at first thought it was a joke. It seems Jerry Seinfeld did a show about it, though I haven’t seen it.