The user-submitted entry for my name says the name is the german variant of
Torvald.
I have been told (my parents cobbled it together) that it rather is the English variant.
To me this seems more plausible, as Germans definitely have a hard time distinguishing (in speech) w from v, and the [þ] of the Norsemen was changed to [th] in England (Old-English "ye olde" -> "the old").
I don't really want to start an editing war...