u/LegioXXVexillarius

I'm formulating a story where the main character has a black dog (Black Shuck, Grytash etc) as a companion. I was thinking of "Holdsceadu" as in loyal/faithful shadow because 1)it's black and 2) it is very faithful and follows it's master like a shadow. But would it make sense in Anglo-Saxon to call a pet dog that?