Ben Marx was killed in Red Listed by Kirkland because of Jane's fake list.  Marx smelled of PINE and the place Kirkland owns is in the woods -- this suggests that the man who was Rosalind Harker's lover is a Kirkland -- Michael or Bob, I don't know.  Whether or not this is RJ I don't know for sure either.  Not entirely convinced all the people we think are RJ really are. 

BUT, definitely think a KIRKLAND is Harker's lover.