1 Chronicles 2:16

Whose sisters were Zeruiah, and Abigail. And the sons of Zeruiah; Abishai, and Joab, and Asahel, three.

Whose sisters were Zeruiah, and Abigail. Here the sons are mentioned by the mother's line-instances among the Jews of the father sometimes being not taken into consideration at all; as is the case in many places of the Himalayah mountains, and at many courts of the Rajahs, as at Travancore, etc. (Joseph Wolff, 'Missionary Labours,' p 493).