This might be another illegitimate daughter for Capt. John Quane:

IGI Individual Record FamilySearch™
International Genealogical Index
British Isles

CATH SHARK
Christening: 12 APR 1808 Kirk German, Isle Of Man

Father: ***JOHN QUAYNE***
Mother: JANE SHARK

The surname Shark throws me for a loop because there are only 2 mentions on familysearch of Sharks on the Isle, and nothing on Manx Notebook or on the censuses of FindMyPast.

Does anyone have any further information about this?

Thank you.
Carol M.