the daughter of Marciana, who was the sister of Trajan, was the mother of Sabina, who was married to Hadrian in the lifetime of Trajan. We do not know the name of her husband, and we have no particulars of her life. She survived Trajan, whose ashes she brought to the city, along with Plotina, the wife of Trajan (Spart. Hadr. 5). We learn from coins and inscriptions that Matidia received the title of Augusta in her lifetime, and was enrolled among the gods after her decease. (Eckhel, vol. vi. p. 469, &c.)
A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890