Re: Orgin of Lynn and Leigh endings for girls?
-lynn is ultimately a diminutive suffix - derriving from the german diminutive suffix -ina/-ine.
Carla > Carline > Caroline > Carolyn
Paula > Pauline
Adelheid > Adelina > Adalyn
So it's easy to just add it to another name. An easy way to create an new name.
-leigh/-ley is ultimately an Old English suffix -leah "clearing".
Ashley
Hailey
Riley
...
So it's easy to just add it to another name and create a new one.
I also guess, it sounds feminine and cute to many people.
It's the same with -den for boys.