Yes, that was Prince Henry’s eldest son at the end of WW2. Henrik was Fritz and Vicky’s second son. Henry and his wife Irene of Hesse had three sons, two of whom (the eldest and the youngest) turned out to be haemophiliacs. The youngest, also a Sigismund, died in early childhood.
The eldest I think was another Waldemar. He and his wife fled the Russians advance in 1945. He needed a blood transfusion because of his condition, reached a town, got one, US troops then took charge, but all the doctors, hospital and medical facilities were turned over to saving the occupants of a nearby concentration camp who were, as you can imagine, in a terrible state. So Waldemar couldn’t get a second transfusion and soon died.
