I have some Ridsdales from London in my tree and they were tailors. Thomas born 1801 in Thirsk, Yorks. He moved to St. Martins in London before 1823 and was a tailor. His wife was Eliza born 1801 in London also a tailoress. They had Thomas born 1823 in London, a tailor. Henry 1836 a tailor who was married to Ellen then Eliza/ Elizabeth. Eliza 1837 a tailoress who married Robert Gooch. Robert 1840, a tailor and James an engineer born 1842, he married Catherine Sheekey in 1862. I have a lot more information on the family if you are interested. Linda.