Thanks for that Humphpaul.
Accurate birth year for Isabella 1840.There is a possible brother, Joseph Gemmell, who died at age 21 in 1859,birth c.1838. Don't know where yet.
Have found another child for Isabella Gemmel and Thomas Christie. Elizabeth Wannop Christie b.1874 in Carlisle.My g.grandfather John Joseph was their other child b. 1872.So it is very likely that Wannop was Isabella's maiden name.
Still looking for marriage record between Isabella's parents Joseph Gemmell and ? Wannop,and birth record for Isabella. With this extra info could someone help please.
Bona