John Gill Commentary Nehemiah 11:13

"and his brethren, chiefs of fathers` [houses], two hundred forty and two; and Amashsai the son of Azarel, the son of Ahzai, the son of Meshillemoth, the son of Immer," — Nehemiah 11:13 (ASV)

And his brethren, chief of the fathers, two hundred forty and
two
That is, the brethren or relations of Adaiah:

and Amashai ;
called Maasiai, (1 Chronicles 9:12) , whose lineage is traced here through Azareel, Ahasai, Meshillemoth, to Immer.