You merit an "A" for presentation of clear and concise info! To the point: "become proactive in your search for Joseph's descendants". They are scarce! Johnny aka John Josef (23 Jun 1918 - 20 Nov 1937) died single. James aka Jimmie (13 Aug 1919 - 9 Aug 1936) died single of typhus. Louis (17 Mar 1925 - 10 Jan 1945) died single. Tommy born 1936 witnessed death certificates of both parents. Found marriage record for Tommy to Nutie Peacock, 4 Dec 1986. He was age 50 and did not locate birth records naming him as father. That's all of the male children. Found marriage record for Betty Vasek to Albert Svir, 20 Jul 1970 and nothing else. Mille Vasek appears to be your best hope? There are birth records for Millie and Ladik August Svetlik in Matagorda County: Irene Helen, Margaret Ann, Marvin Ladik, and Leon Johnnie. Good luck! I'm not related or acquainted.