I think that marriage in 1882 would have been John and Caroline's son, John William, who was ch.05 Jul 1868.
I quickly looked up the 1881 Census and found
Sarah A. Glover, c.1872 age 9yo in Tainton, Glos.The Census was in Worcester.But I didn't have that info, so thanks.
Your request for details of my John in the 1901 Census are:
Address: Cabin Boat
Civil Parish: Birmingham
Eccles. Parish: St. Bartholomew
Parliamentary Borough: Bordesley
Admin. County: Birmingham
TONKS John, Head, M, 58 last birthday, Prof. Bootman, but I think it must mean boatman, Employment status - worker, born Gloster City.
TONKS, Sarah, wife, M, 48 last birth. born ...Bristol.
TONKS, Blanche, daughter, S, Age last birth....., Assistant Steerer, worker, born Gloster.
TONKS, Florence, daughter, S, 19 last birth, Assistant..., worker, born Glos.
TONKS, Edward, son, S, 16 last birth, Assist..., worker, born Glos.
TONKS, Sarah, daughter, 8 last birth, born Glos.