The best i can figure , lussa : rage , fury , frenzy. i do know that in greek it means " wolfs rage " . How the word lussa found its way to Scotland ,,, ????? ,,, I dont know, the romans had a lot of influence in Scotland , did they bring the word and it get infused into the language ? the norse ? There are several areas with the word lussa in them . Do you know when the river lussa accquired its name ? or inverlussa was named ? lussa bay ? glen lussa ? Scotland at one time had a lot of wolves , could these areas have been heavily pouplated with wolves at one time in history ? People use to burry their dead in areas were wolves couldnt easily get to them. Werewolves where also a part of beliefs for centuries
I dont speak any gaelic and don't know if it's in any of the gaelic languages . I found this bit on the net : Luss , if not mistaken , the old county , Dumbarton , or lus in the 1200's , having a meaning of : goidelic : lus " herb" and something I didn't know, that on the river lussa there are some ruins that date back to 7000 BC. Now i am really wondering how the word lussa fits into the picture ,,, wish me happy hunting , you just stuck me on the net for a few days , lol . .. it is a nice name ... does he look like a wolf ?
Hope it was a little bit of help .