His father of the same name was consul in 144 BC. He had at least two children: one son with the same name who then become the consul in 65 BC and one daughter Aurelia Cotta, who later was married to Gaius Caesar the Older and bore him three children, two of which was the dictator Gaius Caesar the Younger and Julia Minor, the first Roman emperor Augustus's maternal grandmother.
Hij had een relatie met Rutilia.
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