I suspect going by the baptism of Thomas in 1863 he may have had a brother John Elliott Gordon baptised 4th January 1861--just mother Ann recorded.
SS
added
IT IS NOT ANY OF THESE 3--they can be found in 1861.
GORDON, JOHN ANDREW HARRISON
GRO Reference: 1860 S Quarter in SUNDERLAND Volume 10A Page 406
GORDON, JOHN GEORGE GAUNTLETT
GRO Reference: 1861 D Quarter in SUNDERLAND Volume 10A Page 426
GORDON, JOHN JAMES RISEBOROUGH RISEBOROUGH
GRO Reference: 1860 D Quarter in SUNDERLAND Volume 10A Page 383
SS