Ulpia Marciana was the sister of the Emperor Trajan, and the first imperial sister/relative (never herself an empress) to receive the title of Augusta and to be deified after her death.
She was born in 48 CE, sometime in August–possibly between August 15 and 30th, according to the fragmentary imperial cult calendar from Doura-Europos. She had one daughter with her husband, Gaius Salonius Matidius Patruinus, namely Salonina Matidia, the mother of the Empress Sabina. When her husband died in 78 CE, Marciana went with Matidia to live with Trajan and his wife Plotina. They enjoyed a close relationship, and she advised him frequently.
She was well liked throughout the empire, and a number of cities were founded in her name while she was still alive: Colonia Marciana Ulpia Traiana Thamugadi (modern Timgad, Algeria) in 100 CE and Marcianopolis (modern Devnya, Bulgaria) in 106. She was offered the title of Augusta by Trajan, and initially refused it, but after being convinced by Plotina to accept it, she was regularly included in the imperial iconography. On her death between 112 and 114, Trajan requested her apotheosis, and the Senate approved it, thus creating the cultus of Diva Marciana.
As Hadrian was within Trajan’s household, and had a close relationship with Plotina and Matidia, and was married to Sabina, I’m certain that he would have likewise had cordial relations with Marciana, who seemed to have been loved by everyone. She was honored by having a demoi of the city of Antinoöpolis named after her (in the phyla named for Matidia). Therefore, we should honor her likewise.
Ave Diva Marciana Augusta! Ave Antinoe!