[Morsul the Dark]

Personally I think this one is prettyn easy but we'll see..

I am born the earliest
Considered by many the most important
I can be sweet when desired

I am born Second
I am much the same as my elder brother
But I can be Salty if Desired

Third Born am I
I am twice the one
I Am not as well known

Fourth Born Am I
Many would use me to ease their labor
Yet two more brothers remain in this family.

I am Fifth Born
I am the smallest of my brothers
I'm known sometimes for my biscuits

I am Sixth Born
I bring the family together.
I am last until my oldest brother is born again.