My mother Grace was the daughter of Christopher & Rose Teasdale. Christopher was a photographer, an aerial photographer in the RAF during 1st World War. This branch of the Teasdale family were from the Yorkshire area. I have a great aunt Amy who lives in a home called Teasdale House in York. It is a nursing home now but was once the home of Amy who is 95+. She lives there with her maid and tells you to leave when she tires of your company - usually around 15 minutes. I am more used to seeing McGrath's in the US rather than the Teasdales who always seem to be so English, however I have an aunt who knows the family history and will check if any of your Teasdales are related to mine.