Weird! But I could see Sorsha being a form of
Sorcha, yes. I seem to recall
Sorcha being properly pr. SOR-ka or something similar though, so if Sorsha's a form of
Sorcha, then I'd bet it was a phonetic respelling based on a misunderstanding of
Sorcha's real pronunciation.
Miranda
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Proud adopter of 15 punctuation marks; see my profile for their names.