He was a proper gentleman, conducting himself politely in public and flirting with women. He was a closeted homosexual and had a gay secret relationship with one of the servants, Davenport, meaning the Curbishley/Eddison line might end with him. It appears his father and the head butler knew of this, but kept it a secret. Their relationship was quite developed, with the two of them often having secret liasons, as shown when Roger dreams about going on a walk with Davenport, and when the two of them are alone in a room together when the Doctor, Donna and Agatha Christie go looking for the Vespiform.