I guess you must be descended from Ann Corjeag who married William Crowe, and then presumably from Charles Ewert Crowe? Only got the IGI to go on for this bit, but he seems to be the only son. Is this right? Do you know what happened to the descendents of Ann's brother William Henry Corjeag, especially John Hadden Corjeag (died 1931) who married Isabella Brown (d. 1946)? Also Ann's brothers Francis Corjeag (b. 1844) and John (c. 1841)?
I've got a photocopy of a handwritten tree going back to Patrick Quartaige and headed 'Ballonna' which apparently has been on display at Loch Parade church and/or Ballaugh church sometme. It compares to information you quote - have you seen it too? The last original line has my mother Eileen on it. I don't know who drew it up. The registers and IGI have more names and dates of course.