Mediaeval family trees, including Edward IV….
The above illustration is from BL Harley 7535. (Thank you Laura Blanchard for the identification.)
Oh, I do love the intricacies of mediaeval heraldry. Which family carried which coat-of-arms? Why was it so important? How did they settle differences over these things? Well, Jenny Weston has written a very interesting article at https://medievalfragments.wordpress.com/…/medieval-family-…/
I thoroughly enjoyed it, and hope you do too. In fact, the entire blog is interesting to those who appreciate the mediaeval period in general.
The illustration shows a genealogy of Edward IV.