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2. Ancus (Marcius), i, m. [v. ango] (prop. a servant, as bending, crouching; hence = ancus Martius = θεράπων Ἄρεως, servant of Mars), the fourth king of Rome, A.U.C. 116-140, said to have been the grandson of Numa by Pompilia, Cic. Rep. 2, 18, 33; 2, 3, 5; Varr. Fragm. p. 241 Bip.; Liv. 1, 32 sqq.; Verg. A. 6, 815; Hor. C. 4, 7, 15; Ov. F. 6, 803 al.