Thank you for putting together this great site. I found information here to help build out my family tree. I am a descendant of Okko Peter Tjaden (born 1828). I can provide information for the tree 15 on page, O. P. 4, for the children of Fred Ervin Tjaden. If you are interested, I will get in contact with my uncles, Timothy and Dennis (my father, Leland, and my uncle Mark passed away in 2014). They could give me more precise dates for their children's birthdates and marriages.
Thanks so much,
Sharon Tjaden-Glass (Dayton, Ohio)
Born: November 24, 1981