"Salonia Matidia (4 July 68 CE – 23 December 119 CE) was the daughter and only child of Ulpia Marciana and wealthy praetor Gaius Salonius Matidius Patruinus. Her maternal uncle was the Roman emperor Trajan. Trajan had no children and treated her like his daughter. Her father died in 78 CE and Matidia went with her mother to live with Trajan and his wife, Pompeia Plotina.
Between 81 and 82, Matidia married a suffect consul and former proconsul Lucius Vibius Sabinus. Sabinus died in 83 or 84. Matidia bore Sabinus a daughter called Vibia Sabina, who would marry the future Roman Emperor Hadrian. Matidia was very fond of her second cousin Hadrian and allowed him to marry Vibia Sabina." - (en.wikipedia.org 11.08.2021)
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