last. In contrast with others.
these. The only case where there were three heads. In all other cases (except Ezra 8:14, where there are two) only one head is mentioned.
Related Commentaries of Ezra 8:13
Ezra 8:13
13 And of the last sons of Adonikam, whose names are these, Eliphelet, Jeiel, and Shemaiah, and with them threescore males.