Greetings!Have you seen the Frank Boldt Biography yet listed in "History of Dakota Territory" by George W. Kingsbury, Vol. V (1915) p. 849-850 transcribed to According to Maurice Krueger the Biographies were written about themselves by themselves.
This one states Frank b. 25 Feb 1868 in Germany and his parents are Gottfried and Caroline Boldt.He came to America 1885 age 17 in WI, then Spink County SD, and Edmunds County manager of Hosmer mercantile Co.In 1895 wed Miss Bertha Kunde also of Germany.They have seven children Amanda F (Franzicka?), Paul H., Emil H., Erna B., Emma L., Esther B.
If he was born in 1868 that makes FGBoldt 19 at the time, but Alvina "Ella" Haufschild wasn't born until 1882 another 14 years before their 8 children. What do you think?