I've got two beautiful
Myrna friends, so that's my preferred version. That said, I prefer most other forms of
Mary, including
Moira. That rather flat vowel - yr! - doesn't sound as good as I'd like.
Myrna Beatrice,
Myrna Catherine,
Myrna Cecily,
Myrna Juliet and
Myrna Penelope would do it for me. But I'd still prefer
Moira!