As for this marriage:
Marriages Jun qtr 1857 ?
Barter, Annie Warminster (5a 287)
Snelgrove, John Stephen Warminster (5a 287)
I would seriously think of obtaining this marriage cert.
If this is the right one, it will give an indictation of when they sailed?
If this is her 2nd marriage, her fathers name will be under her maiden name!?
Just a thought
Brian