The St. Helier baptisms are available on-line at the Jersey Archive
http://catalogue.jerseyheritage.org/ but it is a subscription site. Even then, there are only a number of Parish's available.
I have looked at the St. Helier baptisms and the only John Filleul Touzel is born 21/12/1865, baptised 18/02/1866, father Helier a carpenter and mother Ann Le Bailly. God-parents were Aaron Filleu and Elizabeth Touzel, his wife. There are no other John Touzel's in that Parish
Stewart