Kim: A cousin of ours Fred Dunbar (now deceased) made a couple hundred page loose leaf book "The Dunbar's of Lorne" 1620-ca 1900. Couple things he noted regarding 1822 Elizabeth Dunbar, "known as "Bethy"....Father died when she was only seven, her older brother 1808 Robert took over the headship of the family." After listing Elizabeth's family etc Fred added this.
"Ed. comment: When Elizabeth's father, John, died prematurely in 1829, his eldest son, 1808 Robert, along with their mother, was left to care for two young brothers and four sisters all under eighteen. Suitable husbands for the sisters in the Big Brook area may have been a problem. Elizabeth's grandfather, 1758 Robert, was still alive until 1843 and living at the "Loading Grounds", the entrance to the East River, now Abercrombie Township. Elizabeth married a man from Robert's neighbourhood and Big Brook was a considerable distance away. It is purely conjecture but perhaps Elizabeth, one of the youngest daughters in John's family may have gone to live with her grandfather at the "Loading Ground" and met Donald Cameron, while there."
Note this is Fred conjecturing :) . Bill