I believe there might be two people named Elizabeth.
Per https://www.lamartin.com/genealogy/raulerson.htm
John did not marry but did produce 5 children.
The tree linked Elizabeth (Moore) Raulerson, but she married John's son William.
Williams' "Find A Grave" page notes: https://www.findagrave.com/memorial/54934912/william-raulerson
"William Raulerson was the son of John Raulerson 1749-1816 and Elizabeth (Unknown)."
Does anyone have any information to clear the tree up?