You found one! Roy was my uncle (one of my father's younger brothers). I think I met Richard when I was very young but did not get to know Richard and Shirley as Roy and Irene divorced when I was young. I think my older brother (Larry) knew Richard.
If you still live in Indiana, there are a number of cousins and other relatives nearby. Roy's oldest sister, Hazel, is still alive (90+) as are his younger sisters (Mary Catherine and Loretta Mae). All of the brothers have passed away; my father being the last to go (Feb 2000).
Roy's father was Harvey David Etchison, son of Daniel M Etchison and Sarah Pierce. Roy's mother was Mamie Ella Mae Scott (adopted by a Scott family; nee Mary E Guy or Mary E Johnson - mother was Mary Ann Guy and father was Wm. Johnson - not married - but I found birth record in Terre Haute/Vigo Co records).