Bother. Thanks for the help, but I have been barking up the wrong genealogical tree. Although Margaret Crow said (or possibly her husband did) that she came from Bride, her marriage certificate says her father was Thomas. It’s much more likely that her father was right, of course, so Bride is probably incorrect. In that case, our Margaret was probably christened on 23 NOV 1833 at Ballaugh, and her parents would have been Thomas Crow and Ann Lace.
Roger