A noun appearing as G. bedhron “husband” in the Gnomish Lexicon of the 1910s replacing archaic G. †benn, a combination of the early root ᴱ√Beđ that was the basis for marriage words and the agental suffix G. -(r)on (GL/22).

Neo-Sindarin: I would adapt this into Neo-Sindarin as ᴺS. bethron “spouse (m.)”, a combination of the later root ᴹ√BES “wed” and the same agental suffix, where sr became thr.