Alright, as we already know, Sillabub is Jemima's North American name. 
Sillabub is a combination of the words "silly" and "Beelzebub," which 
really makes no sense for Jemima. I'm going to talk about the Jemima 
I've seen.. Jemima is the youngest cat in the tribe, and if you'll 
pardon me saying so, the most adorable one there is. She has a 
beautiful voice (I'm a huge fan of Veerle Casteleyn, the person who 
played Jemima on the video) and she's an excelent dancer. However, 
she is exetremly smart for her age, because she is the one who truely 
understands what happiness really is. The name "Sillabub" is very 
unsuitable for Jemima, because of all the kittens (Etcetera, Electra, 
Victoria, etc.) she is the least 'silly.' She is playful, as all of 
the kittens are, but she isn't.. you know.. Etcetera-playful. I've 
writen long arguments about who Jemima's parents are. I keep reading 
that she's Munkustrap's daughter, which is too strange for me to 
believe (watch the video. Munkustrap barely even looks at her. That 
isn't exactly dad material, no?). Now, the two best arguements I've 
heard about Jemima's parents are that:

a) Jennyanydots and Skimbleshanks are her parents. I could agree with 
that, since it's obvious Jenny and Skimble are mates (If you don't 
believe me, watch the video closely). My only argument is that Jemima 
looks nothing like either of them. But they do seem protective of her, 
so that's all well and good.

b) Have you ever noticed how much Jemima and Demeter look alike? My 
opinion is that Jemima is Demeter's daughter, by Macavity (it's 
popular belief that Macavity catnapped Demeter, and that's why she's 
always afraid when he shows up). My theory would explain Jemima's 
colouration (the same markings as Demeter, and the faint dark red she 
has from Macavity).

ANYWAY, Jemima is just a sweet lil kitten who wouldn't hurt a fly =)

- Jellicle Jemima