[3] In 1864, he married Anna Letitia Le Breton, the daughter of Charles Rochemont Aikin.

He placed second in a close three-way race and was elected along with Liberal incumbent Amor De Cosmos.

[1] Roscoe did not stand for re-election in 1878[1] and died later in the year in Victoria at the age of 47.

[2] He was replaced in the seat by incoming Prime Minister John A. Macdonald who had lost his Ontario seat earlier as the BC portion of the election was delayed, and because he was deemed unelectable in eastern Canada due to ongoing politics surrounding his role in the Pacific Scandal.

Roscoe's Victoria home is today preserved by The Ross Bay Villa Society as a rare example of a pre-Confederation colonial house.