A modern invented name, likely derived from Tinsley.
Tynslee is a contemporary American invention, most likely a creative respelling of the English surname Tinsley. The original surname refers to a field or meadow belonging to a person named Tynni in Old English. As a modern creation, it emphasizes unique phonetic appeal over historical roots.
Less common today
Tynslee isn't in the latest US Top 1000. It last peaked at #7,734 in 2018.
US births per 5-year period, 1990βpresent (SSA data).