 It was revealed in the final episode "Sleepless in Peckham" that Rodney is not in fact Reg's biological son, but Freddie Robdal's.It is also shown in "Rock & Chips" he is an abusive husband to Joan, earning him the hatred of Del and Freddie, and has an affair with the Nag's Head barmaid called Val.Violet "Vi" Trotter was the estranged, sharp-tongued wife of Ted Trotter, mother of Reg and the paternal grandmother of Del Boy.