Looking for birthdate of my 3rd great grandmother Isabelle/Isabella "Belle" Cochrane b abt 1796 possibly Ballyclare, Co. Antrim. Her father may be Alexander Cochrane b abt 1765 Co. Antrim 7 died there. Her mother is believed to be Margaret Unknown b abt 1770 Co. Antrim, d 1832 Quebec, Canada. Margaret migrated to Canada with sons Alexander 1790, John 1799, James 1803, Robert 1807
Isabelle married John "Black Jock/Jack" Gilmer in Co. Antrim abt 1818.Several children later, they migrate to Quebec, Canada.Among their children, which i have documented to present generations, was my Great Great Gfather, Alexander.
Would like to verify Isabell's birth, if possible, and other Cochrane lines who may still be there. Any help much appreciated.