Name of a Roman family originating from Arpinum (epigraphically also Grattidius) from a development of the name Grattius (Schulze 427).
 Supporter of C. Marius, first victim of the Civil War
In 88 BC, G. was supposed to take over the army of the consul Cornelius [I 90] Sulla on behalf of C. Marius and, therefore, was murdered by his soldiers (first victim of the civil wars; Val. Max. 9,7b,1; Oros. 5,19,4).