I don’t know why but ever since I stumbled into Kuroshitsuji, I have always quite liked the thought that Our!Ciel’s name is Cedric - after his grandfather.
And why? Because I think that’s something Vincent would do.
He lost his mother when he was 15, and he either lost his father around the same time or even earlier. We have no idea how their relationship was, but I cannot really imagine Vincent not having loved his parents. And when he had finally become a father, wouldn’t he name one of his sons after his father? At that time, so many people named children after family members or themselves. Queen Victoria, for example, named her first two children Victoria and Albert. I also believe that if Vincent ever had a daughter, he would have called her after his mother.
And wouldn’t it have been terribly sweet if Vincent had named one son Ciel - sky - and the other Cedric - a name with no real meaning, but which is meaningful to him? Especially when the son he named Cedric was the younger one? The youngest son who would not inherit anything? The youngest son people may consider unimportant, but who isn’t? Just like his name, he may not seem important on the outside, but in reality, he really is - he is loved and liked, and nobody thinks of him as unimportant. That he has a meaning.
And in case if Cedric K. Ros- is Undertaker - perhaps, Vincent knew about him and Cloudia? Or perhaps, he didn’t but he heard Cloudia once calling Undertaker “Cedric” (or anything like that) - Undertaker, whom he had known for so long; Undertaker with whom he was surely close. Undertaker who was surely important to him; and this would give more meaning to the name “Cedric.”
Also, I always had the opinion that whatever our Ciel’s real name is, it should have an “c” in it because every Phantomhive by birth (like Edward and Elizabeth are Phantomhives by blood, but weren’t born into the House of Phantomhive) we know so far, has a “c” in their name: Cloudia, Vincent, Francis, Ciel.
And “Cedric” has two “c”s and he’s the second son.
I am absolutely fine if Our!Ciel’s name turns out to be Astre because I think it is a lovely name, especially in regards to the “theme names” thing for twins (and it adds more to the title of my other story than I’ve actually intended (Ciel is, in fact, one of the Stars the title refers to.)), but I still like Cedric better.
Crack Suggestion for the Lulz:
What if Our!Ciel’s name is Diedrich?
Like Diedrich came to visit Vincent after the twins were born, and…
Diedrich: So… what kind of terrible names did you give your children?
Vincent: *points at one of the twins* This is the older twin, Ciel. Isn’t he cute?
Diedrich: Hmpf, hmpf. It won’t save him from his terrible name. Did you flip open a French dictionary and point at a random word? And let me guess, the other’s name is Croissant?
Vincent: *picks up baby number 2* Diedrich, can I proudly present you my second child? The Honourable Diedrich Phantomhive. (Note: I read somewhere that the younger sons of Earls don’t hold the title “Lord” but “The Honourable.)
(This would also be interesting, considering Rachel may have had some miscarriages before having the twins. Alphabet naming and so on.)