Jean,
I knew I'd copied this down years ago and I've been checking all the Catholic baptisms today to find it again. It wasn't in chronological order with the rest of that year !
However I eventually found it again.
Baptism record : (in Latin it was Maria)
4 August 1839 Castletown
Mary McCarty, daughter of Hugh McCarty & Rose Hoy
(conjugum)married.
Sponsors Michael Dingle & Lucy Doyle