What makes a bastard anyway? My nephew would say it's someone who cuts my mother off in her car.

Richard sets up all the dominos. Buckingham and Richard put on quite a show. But the academy award goes to RICHARD!

In case you want further details about this wacky family, here is one take (with a family tree for reference):

https://www.superflumina.org/king-richardiii-rise-house-tudor.html