Other than her marriage to William McGregor, nothing is known about Elisabeth Thom. Another Elizabeth Thom also lived in Dunfermline at the same time. There can be no doubt that they were not one in the same person, for the other Elizabeth Thom, daughter of George Thom and Elizabeth Wilkie, was married to Andrew Carnegie, the grandfather and namesake of the famous Andrew Carnegie, who emigrated to the United States in 1848, amassed his fortune in the steel industry, and whose philanthropy included establishment of countless libraries worldwide. Elizabeth Thom and Andrew Carnegie, senior, had 8 or 10 children (accounts vary) during virtually the same period that Elisabeth Thom and William McGregor had theirs, all in Dunfermline.