Here John Gilbert, the 1830 compositor, removed the redundant and he. In this case, he first made the correction in 𝓟 itself (by crossing out these two words). To be sure, the original repetition of the subject was helpful because of the immediately preceding parenthetical statement, “and his name was Nimrah”. On the other hand, the editing provided a predicate for the original sentence fragment at the beginning of the verse (“and now the brother of him that suffered death”). For another example where the 1830 compositor crossed out this kind of redundancy in 𝓟 itself, see under Ether 3:1 (there he deleted a redundant “therefore the brother of Jared”). For another case where a repetitious and he has been removed from the text, see under Alma 30:12.
Summary: Restore in Ether 9:8 the redundant and he that the 1830 compositor deleted; such repetition occurs fairly often in the original text, especially after parenthetical statements.