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The consulship is securely dated to 146 based on the Fasti Ostienses, but it is not sure that the person mentioned there is this Gaius Ummidius Quadratus here. See de:Ummidius Quadratus. -- DerMaxdorfer ( talk) 15:29, 2 November 2022 (UTC) reply

Apart from that, I am a bit confused that Gaius Ummidius Quadratus Sertorius Severus is said to have had a son with his own grandmother... -- DerMaxdorfer ( talk) 15:30, 2 November 2022 (UTC) reply