Castes and Tribes of Southern India/Vāl Nambi
Vāl Nambi.— Recorded, in the Madras Census Report, 1901, as "a synonym for Mūssad. Nambi is a title of Brāhmans, and vāl means a sword. The tradition is that the name arose from the ancestors of the caste having lost some of the privileges of the Vēdic Brāhmans owing to their having served as soldiers when Malabar was ruled by the Brāhmans prior to the days of the Perumāls."