Marian, Our line of Dyas did not come out of St. Louis. My dad is also named Dave but we have no knowlage from our genealogy books on a line from St Louis. The book I have is published by Halberts,(3687 Ira Road, Bath, Ohio 44210) called "The Dyas'es In America" and it only lists most of the current Dyas'es living in the United States today. It lists 250 names and address, but I know they're is a lot more that is not listed. Sorry I could not help you more. I will keep in touch if I find any more information.