Supplanter or lake
A modern American invention, likely combining the name Jae (a variation of Jay or James) with the popular suffix -lynne. It carries the traditional meaning of 'supplanter' from James, while the suffix evokes the Welsh word for 'lake'.
Fewer than 5 girls were named Jaelynne in 2025.
US births per 5-year period, 1990–present (SSA data).