Braddan also included Douglas
I never found a marriage - they don't seem to be in 1841 census on IoM nor can I see them in the burial reg

Isabel's father was Thomas - his 1834 will in Kk German - dated 12 apr 1834;ch thomas,elizth(w/o thomas lace),jane(w/o david johnson);wife alice als callow exex;witt robert kinnin, richd cowley

Alice Looney is at Mullen e clieu in Kirk Patrick in 1841 - her son Thomas ia a miller - Alice buried Marown 18461206 age 88
With Alice is Alice Johnson - possibly a d/o of David + Alice Johnston's illeg child Ann Sayle; Alice Looney is likely the d/o John Callow + Alice Curphy bapt Douglas St Matthews 17600316 (John + Alice m Maughold 17540108