My gt. gt grandfather, Joseph Thackrah, had 8 siblings one of whom was John (B. 10.30.1804 in Pudsey). He was a Woollen Manufacturer. I don't know the name of his wife, but he had a daughter named Rachel (B.1835 in Leeds). She was a dressmaker and married John Firth on 8th Feb 1858 in Hunslet ( He was a Clerk of Amos Firth). If this is who you are looking for , I can take you back two more generations.