https://en.m.wikipedia.org/wiki/Quintus_Marcius_Barea_Sura

Quintus Marcius Barea Sura was a Roman statesman who served as Senator. He was the father of Marcia Furnilla, the last wife of Titus, and maternal grandfather of Trajan through his other daughter Marcia, Trajan's mother.[1]

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Quintus Marcius Barea Sura

Quintus Marcius Barea Sura was a Roman statesman who served as Senator. He was the father of Marcia Furnilla, the last wife of Titus, and maternal grandfather of Trajan through his other daughter Marcia, Trajan's mother.

Source :

https://en.wikipedia.org/wiki/Quintus_Marcius_Barea_Sura