Original sentence: Lady Sarah Lennox (1745–1826): married first Thomas Bunbury, 6th Baronet, and had issue (although not by her husband, but by Lord William Gordon); and secondly George Napier by whom she had issue
Edited sentence: Lady Sarah Lennox (1745–1826): married first Sir Charles Bunbury, 6th Baronet, and had issue (although not by her husband, but by Lord William Gordon); and secondly George Napier by whom she had issue