MONENNA, SAINT
Dareca of Kilslleibeculean

Ulster, founded a church and nunnery on Dunpeledur [Edinburgh, Scotland].

Glennie suggests a connection with the Castle of Maidens at Edinburgh. The saint died in 518.

I assume Monenna was a woman; the "a" ending is not infallible, but it was a nunnery that Monenna founded.