God
Ellisyn is a modern feminine variant of the name Ellison, which originated as an English patronymic surname meaning 'son of Ellis'. Ellis itself is a medieval English form of the biblical name Elijah, which means 'Jehovah is God'.
Less common today
Ellisyn isn't in the latest US Top 1000. It last peaked at #2,046 in 2018.
US births per 5-year period, 1990–present (SSA data).
