Cath is under "Brunda" in the index to Ancestry, in the 1841 census. 1464/1 67 8.
In 1841 adult ages were rounded, and no relationships given.

Cathrn Bannon aged 65 is in Lezayre with (presumably) her daughter Elizabeth, aged 30, Teacher, son Andrew aged 30, Ag Lab, and Andrew aged 9. Head of household is Thos Quayle, 35, Ag Lab. All b.IOM.
Thomas Christian aged 60, farmer, is the next entry, but probably coincidence.

Sue