1827 Dec. 143/1 This horse..has the character of being a splendid water-jumper.
1855 F. I. Duberly Jrnl. 11 July in (2007) 206 The best water jumper out of Ireland.
2014 horsetalk.co.nz 2 Dec. (O.E.D. Archive) I can't tell you the amount of times that horse understood what was going on. He was a great water jumper.