Bram Stoker referred to Dillon as a childhood friend and it is thought they were distantly related cousins through his mother Charlotte Blake Thornley. Dillon was a nephew of John Blake Dillon and cousin of John Dillon both Nationalist MPs. Stoker declared himself a ‘Home Ruler’ along with his brother Surgeon Thornley Stoker.
Valentine was the son of Thomas Dillon from Ballina, County Mayo and his mother was thought to be a Blake from Sligo. He married Margaret Phelan, daughter of Thomas Phelan, in 1872 in the church of St Columba, Ballybrack, Dublin.
Dillon passed away of a sudden illness in 1904 in Dublin
Further historical research is required on the life of Valentine and how his friendship with Bram Stoker developed.