Carl was born about 1895 in Osage City, Osage County, Kansas, the son of Andrew Berquist and Laura Nelson.
His wife was Aline L. Vialle, who he married on 15 JUN 1927 in Topeka, Shawnee County, Kansas. Their four known children were Patty (c1933-1942), Billy (c1935-1935), Nadine (c1937-?) and Kathy (c1939-?).