I forgot the chap about their names being told but i totaly read their mother of father said that the name was Ciel the older/first and the second "our ciel" named was Kristen....
wut? lol. I didn't see his name anywhere in anything I've read. Do you remember where you saw it? Isn't Kristen a girl's name?
One of the names Tobaso considered at the beginning was
Astre or Aster. Some are thinking that will be ourCiel's name.
In the Kuroshitsuji official guidebook it has her notes. some names were angel, angelo, and some were names of stars. Ciel's birthday cards always show him holding a star
What if the twins names are Ciel and Caciel. Caciel pronounced like the angel's name, Cassiel, but spelled Caciel. That way ourCiel can still claim that Ciel is his name.