A modern invented name blending Lynn (Welsh, 'lake') and the Old English place-name suffix -ley meaning 'meadow.'
Lynnley is a modern compound that draws on two Old World sources. "Lynn" derives from the Welsh *llyn*, meaning lake or pool, and has a long history as both a place-name element (King's Lynn, Llanelly) and a stand-alone given name that peaked in the mid-twentieth century as a soft, melodic choice for girls.
The "-ley" suffix comes from Old English *lēah*, meaning meadow or woodland clearing, and is one of the most productive suffixes in English place-name formation, appearing in Ashley, Oakley, Hadley, and hundreds more. By joining these two landscape words — water and meadow — Lynnley constructs a pastoral scene from its very syllables. It belongs to the contemporary movement of "-ley" and "-leigh" names that has reshaped the girls' naming landscape since roughly 2010, offering parents something that sounds established and nature-rooted without being an existing name they might share with a classmate.
Lynnley is gentle without being meek, distinctive without being invented from whole cloth. It appeals to families who want a name that could have existed a hundred years ago but didn't quite — a name that sounds like it belongs to a quieter, greener world.