This bit, about Freud's grandson (the author's father) is hilarious:
On one occasion when he appeared on the Johnny Carson chat show in the US, he had it written into his contract that he wouldn’t answer questions about Sigmund. Carson obviously sensed a story and asked the grandfather question, so my dad answered at length about his mother’s father, who had been a banker in Berlin.
...my sister once came home from school saying: “The nuns mentioned someone called Sigmund Freud and said I should know who he is.”
“Ah,” said my father in a serious tone (his only tone) . “That’s awkward. He was my grandfather; he invented the flush toilet. If anyone mentions his name again, change the subject.” My sister believed this for years.