My name is Alan Birtwhistle. (Yes, with the "h" denoting the Yorkshire line of the Birtwistle family.) I was just checking some Trickett Board notations which came up on my Family Tree Maker program and I noted your grandfather was a William Birtwistle who married an Ada Trickett. I have a lot of William's on my tree which you can see at Birtwistle 4-11-2012 on Ancestry. I do not appear to have a marriage to an Ada. Do you have more information such as your grandparents and great grandparents,such as their birth dates,where they lived, etc. I would like to put your line on our vast tree. The Birtwistle line goes back to 1160 and if I can place your line on the tree, I may be able to give you your direct ancestors back to that earliest ancestor we have found to date. (If you can't access my tree, please give me your direct email address and I will invite you to view my tree. My email address is email@example.com
Hope to hear from you. (We have a lot of Birtwistles or their blood lines in both Australia and New Zealand as well as Canada.