Shela
Shela meaning: Musical.
Shela origin: Celtic
Shela gender: Female

Shelagh
Shelagh meaning: Variant of Sheila: Irish variant of Celia, from Celius, a Roman clan name. Also a form of Cecilia: blind.
Shelagh origin: Irish
Shelagh gender: Female

Shelah
Shelah meaning: That breaks, that unties, that undresses.
Shelah origin: Biblical
Shelah gender: Male