A posthumous name is an honorary name given to royalty, nobles, and sometimes others, in East Asia after the person's death, and is used almost exclusively instead of one's personal name or other...
A.D.J. Limited is the service business based in Leyland
delicious can be used as an adjective(e.g. the delicious pancake ran off) or a noun(e.g. that pho was delicious)
deceased.
Yes brief is an adjective. The word brief can describe something.