What are sires? What are siblings? What are childer?
The list of sires that appears on your vampire page is, in order, your sire, their sire, *their* sire, and so on until you reach a master vampire. Your sire is the vampire that first brought you to the city.
Siblings are other vampires that were also sired by the same sire as you - the close siblings that are displayed are those siblings whose blood count is most similar to yours.
Childer are those vampires to whom you are sire - those vampires you have brought to the city.