A good one, David! Hearing Ammons père et fils together was really something! At the time (1947) they must have seemed poles apart, but less so, viewed from today, I think. As has been mentioned in another thread, we also have our jazz dynasties here in Britain. Pianist Stan Tracey and drummer son Clark (good jazz name!) Tracey come to mind, as well as altoist and band leader John Dankworth and bassist son Alec. I am particularly pleased to have seen father-and-son tenorists Jimmy and Alan Skidmore at gigs 45 years apart! As befits the time lapse, Alan was a Lester/Hawkins man, while Alan has a Coltrane thing going.