Here is a conundrum: The brothers Otto and Grover VOGT married sisters Bessie and Anna WITHEROW respectively. The respective parents were Charles & Amy VOGT amd Robert & Sarah WITHEROW. Now in the 1920 census of Whatcom Co, Wa., Otto & Bessie have a son William aged 35 months. In the same census Grover & Anna have a son Robert aged 44 months. The families also appear as expected in the 1930 census of the county, but in the 1940 census, Otto & Bessie have a son Robert age 22; and Grover & Anna have a son William aged 24. They appear to have swopped children or at least swopped names!