When Jan Bykerk was born on 3 October 1900, in Zwijndrecht, South Holland, Netherlands, his father, Arie Bijkerk, was 28 and his mother, Wijntje Los, was 31. He married Anna Van Dijk on 15 January 1923, in Minnehaha, South Dakota, United States. They were the parents of at least 4 daughters. He lived in Plato Township, Sioux, Iowa, United States in 1920. He died on 11 January 1944, in Grand Rapids, Kent, Michigan, United States, at the age of 43, and was buried in Grand Rapids, Kent, Michigan, United States.
Some characteristic forenames: Dutch Gerrit.
Dutch: variant, archaic or Americanized, of Bijker, an occupational name for an apiculturist, a beekeeper, derived from bij ‘bee’.