I finally completed all 9 seasons of Little House on The Prairie.
Mary Ingall married to Adam Kendall. Mary bore a son, but her child and Grace Garvin died in the fire.
Laura Ingall married to Almanzo Wilder. Laura bore a daughter then year later she bore a son, but he died 12 days later after birth.
Nellie Oleson married to Percival Dalton (Jewish). They bore a twin, a girl and a boy.
Willie Oleson married to Rachel Brown in season 8.
Charles and Caroline Ingall adopted three kids.