Dudley
I haven't even found a branch of cousins who died out. My father's cousins either didn't marry, married but had no children but died many years ago most probably without any assets or married and had children who now have their own children.
The one exception was my father's half cousin (they shared the same grandmother who was married twice, so different grandfathers). Her husband died from wounds the day before Armistice, but she herself didn't die until many years later, 1950s or 60s. She had money which she'd inherited from her own mother who had married (years after having her daughter) to a rich man with children, but who got some inheritance from him. Apparently when she (my father's half aunt) died, there were advertisements in newspapers asking for any relatives to come forward. I've been told by a distant ancestor, that some 1st cousins once removed saw the advert and claimed the estate. They didn't let on that this lady actually had cousins who were still living and they, according to my distant relative, inherited a fortune. Maybe if an heir hunter company had been in existence in the 1950s/60s the money would have been shared out. As I know of at least 10 cousins, they wouldn't have had a large amount each, but would have been grateful for what they got.
Too late now to do anything about it. All the cousins are dead and I have no idea what happened to the money.