I think Jemima/Sillabub is the youngest member of the tribe. She is 
also a very insigtful kitten. With the help of her friends, Coricopat 
and Tantomile, she is able to understand the meaning of Deauteronomy's 
message to the tribe in "The Moments of Happiness" and she shares it 
with the group in her beautiful voice. She is quite playful though and 
like the other kittens enjoys flirting with Rum Tum Tugger, although 
I believe she has her eye on another cat: Tumblebrutus. At least in 
some productions she and he seem to be mated up. I also have seen such 
similarities in her looks and Demeter's that I have been inclined to 
imagine that she is Demeter and Macavity's daughter but she doesn't 
know this because when Demeter escaped from Macavity and found out she 
was pregnant, she went to Old D and her sister, Bombalurina, and made 
them promise to hide her from the others until she gave birth and 
then to hide the kitten's true identity from her until Demeter felt 
she was old enough and mature enough to handle it.

by Jemima_kat