This spelling predominates, but Sheelagh and Shelah are also used for her. The website of the Princess Grace Irish Library
, for instance, uses Shelagh and ranks the...
names
Emily Lawless
BirthName: Emily LawlessThe Hon. Emily Lawless
Pseudonyms: Henry Harvey; John Oliver Maddox, M.A.
Both Henry Harvey and John Oliver Maddox, M.A. were pseudonyms Lawless used in her With Essex in Ireland.
