Cecilia is longer and more complicated, and less English, than
Cecily. And the unfortunate tendency to spell it
Cecelia curdles my blood. I love the
Simon and Garfunkel song, but I love
Cecily more; and then there's The Importance of Being
Ernest.
Since my parents were
Beatrice and
Cecil, I'd want to use
Cecily Beatrice Anne. A name I'd have been happy to have myself.