From the experts:
Long in our category of so-far-out-it-will-always-be-out category, once seen as a gum-cracking 1940's telephone operator, we think it's time to reassess Myrtle, and look at is as a nature name, a plant with pink or white aromatic berries. Ruled by Venus, myrtle is a plant associated with love, peace, fertility and youth.
Myrtle has lots of literary references as well: in Thomas Hardy's The Hand of Ethelberta, Theodore Dreiser's The Genius, P. G. Wodehouse's Meet Mr Mulliner, and especially The Great Gatsby. Fitzgerald's Myrtle Wilson has been played on film by actresses as varies as Shelley Winters, Karen Black and Isla Fisher.