Fritz Carl Zeuthen was born on March 7, 1865 in Reykjavík in Gullbringusýsla. She died in Minneapolis on January 28, 1947.
Spouse: July 15, 1897 Margrét Ingibjörg Loftsdóttir b. in Minneota on April 25, 1877, d. in Minneapolis on July 2, 1964.
Children: 1. Emilía b. April 30, 1898 2. Inez Pauline b. December 3, 1901 3. Victor Earl b. June 1, 1904 4. Fritz b. September 22, 1907 5. Leslie Valdimar b. August 10, 1910, d. June 23, 1931 6. Leon Haraldur b. August 10, 1910, twin 7. Virginia Aðalbjörg b. September 6, 1912 8. Ralph Marinó b. September 25, 1915.
Fritz was the son of the Danish physician Fritz Wilhelm Zeuthen who first lived at Eskifjörður and later in Reykjavík. His mother was named Thora Emilie Rasmussen. Margrét Ingibjörg was the daughter of Loftur Jónasson who came west in 1873 and settled in Milwaukee, Wisconsin and later in Minnesota. Fritz came west across the sea in 1886 and settled in Minneota, Minnesota. He and Ingibjörg lived there the first years, then moved to Minneapolis and lived there a number of years. They moved back to Minneota for some time, but later lived in Minneapolis where their children lived.