I am decended from Hedwig Groos Michaelis. I recently obtained a copy of the book you are talking about, pages 423-428. I hope to have it interpreted soon by a friend of a friend that claims to know german.I don't know of any updated Lists. My father John (Johannie) Fillip is listed on page 427. I only can tell you about decendents of Lula Michaelis Who is the Granddaughter of Hedwig, who married Theodore Michaelis. Her Children live in San Angelo. Thier names are Vergene Lancaster, John Fillip, and Marvin Fillip. Marvin's wife Mickie is really into geneology and is the one who loaned me the book. Her E-mail is autoqueen@webtv. I hope you have lots of relatives respond. Do you have more of this book than I have? I wouldn't mind seeing it some day. You probably already know this but there is some good articles about the Grooses in the Handbook of Texas online. let me know how you are related. thanks, Brenda Fillip Hamner.