When James Patrick Younie was born in 1841, in Sugar Grove, Warren, Pennsylvania, United States, his father, James B. Younie, was 33 and his mother, Margaret S. Stuart, was 40. He lived in Sugar Grove Township, Warren, Pennsylvania, United States in 1860 and Brooklyn, Kings, New York, United States in 1860. He died on 11 September 1862, at the age of 21.
Scottish (Morayshire): from the old Scottish personal name Younie. Black suggests that this may be a derivative of Adhmhnan, pronounced "yonan", earlier Adamnán, which is a Gaelic pet form of Adam . It may alternatively be a pet form of Ewen .