So many....Arlo, Teddy, Theodore, Leo.
Ophelia, Elsie, Lilly.
My son was one of 4 in his Reception class. It never bothered me one iota. I love the name and love the sound of it, so all good to me. I thought, rather than it being common, that the other parents had great taste.
I remember going to his school one day to take him out of class for his injection and strangely all 4 mothers turned up at the same time. The Reception teacher shouted, Dominic A, Dominic G, Dominic L and Dominic N. I remember we all laughed. I didn't find it annoying at all.