'You're treading on my reputation and my father's reputation,' he warned.
The source of the ill will is a 20-page booklet - A Generation of My Family - which was produced last year by Mr Tonge, who distributed 18 copies to other relatives, including Sir Michael.
He decided to write it after his uncle Bernard was diagnosed with cancer.
It was intended to be a look back at the family history but soon developed into a response to Parky: My Autobiography, correcting what it claimed were mistakes.
'Okay, his dad came from a big family but he doesn't have to say things like that. We live in different worlds and we have all lost touch.