How would you translate a name consisting of dictionary words?
The norm is to make it:

a) similar in sound
b) follow Chinese naming conventions

and optionally also choose characters with a relevant or good meaning.

But just as authors can choose pen names such as 矛盾 and 莫言, a westerner can pick a name by your criteria. 矛狐狸 is rather elegant in this perspective, but would be considered a nickname, since 矛 is not a family name.