St. Mary's College. New Oscott, Sutton Coldfield

[Sandyq]

Family memories state that my grandfather Samuel James Rabone born 1879 BHam may have initially gone into the priesthood, and St Mary's College has been mentioned. Also mentioned is that one or more of his sisters went into the convent and my cousin remembers visiting there probably c 1950 when she was a small child.
I cannot find Samuel on the 1901 census, would residents of St. Mary's have been listed
 if he was there,
 he apparently left because he needed to bring money in when his father (who died in 1906) became ill, I have searched in 1901 f0r many years for him without success, he married in 1902 however.
Were nuns names altered to a given name or owuld their deaths have been registered the same as birth names?
Thank you in anticipation