Complex sentence: Hadrian's elder sister and only sibling was Aelia Domitia Paulina, married to the triple consul Lucius Julius Ursus Servianus, his niece was Julia Serviana Paulina, and his great-nephew was Gnaeus Pedanius Fuscus Salinator, from Barcino (Barcelona).
Split into simpler sentences: Hadrian's elder sister and only sibling was Aelia Domitia Paulina, married to the triple consul Lucius Julius Ursus Servianus. His niece was Julia Serviana Paulina, and his great-nephew was Gnaeus Pedanius Fuscus Salinator, from Barcino (Barcelona).