He did actually, after the war he changed it to Stuart-Houston.
There was also a funny moment when he first joined the Navy:
On reporting for duty, the induction officer asked his name. He replied, “Hitler.” Thinking he was joking, the officer replied, “Glad to see you, Hitler. My name’s Hess.”
One would think a legal name change would have been in their top 5 things-to-do-after-the-war list.
Spoiler: he did.
He did actually, after the war he changed it to Stuart-Houston.
There was also a funny moment when he first joined the Navy:
https://en.m.wikipedia.org/wiki/William_Stuart-Houston