Sometimes the names that people like most start with the same letter or sound. And that's why they like them, the sound appeals to them. When I was a teenager, I used to babysit for sisters named
Kelly and
Courtney. During the time I was babysitting for this family, they had a son whom they named
Christopher. After I had stopped babysitting for them, I heard they had another daughter named
Katie. (Not sure if it was just
Katie or a nickname for
Katherine.) Somehow I once mentioned the family to my husband, and he said, "Why do people do that? Give their kids names that all start with the same sound?" I told him that it was probably just that names that started with the hard C sound appealed the most to this couple. It would be stupid to reject a name that one loves in the interest of "Not having them start with the same letter/sound" IMO.