You've found Gus' marriage to Lillie. Did you also find the birth of their son, Alton Lamar, 22 Jun 1918? Unable to assist with the family's history in the Travis County area. (I prefer Travis over surrounding counties 'cause it has the State Capitol at Austin.) Anyway, 1920 TX-Smith-Tyler Ward 3-District 82-Image 18 has Gus T. Carlson(39?), Lillie(38), and Alton L.(1 7/12). Gus immigrated in 1890 and was naturalized in 1900. Next, G. T. Carlson(51) and Alton(11) found 1930 AZ-Cochise-Douglas-District 33-Image 20. Alton married Modestine Minatra and they had Alton Benton, David Minatra, and Randolph Lamar. Birthdates listed Texas Birth Index, 1903-1997. SSDI Alton Lamar Carlson (22 Jun 1918 - Sep 1986) received last benefits in La Marque, Galveston County. Modestine Carlson also expired, 14 Mar 1980, in Galveston.