My mother’s maiden name was Thornburgh.
The Norse Vikings had a rune for the first part ᚦ meaning Thurisaz,
Thorr, or Simply Thorn.
That runs is now a letter still used in the Icelandic language as þ lowercase, making the Thhh! Sound.
It also means giant.
Technically Thornburgh in Swedish is Törnberg, most likely its origin.
It means giant thorn mountain. As berg means mountain in old Germanic.