Answer:
I have a gown but I'm not a priest; I have a crown but I'm not a king.
I am an English word with 3 consecutive double letters.
I am partially baked. I am not completely lit. I am a portion of the moon. I am lesser than full wit. I am a divider of the hour. I am not a total lie. I am a sibling through one parent.
What is put on a table cut but never eaten?
A single syllable do I claim black was my most famous name; Fetal to mortals here below thousands have I slain in a single blow.
I am your mother's brother's only brother in law. Who am I?