Lucilla was the daughter of Domitia Lucilla Maior (
Maior is Latin for
the Elder) and the patrician Publius Calvisius Tullus Ruso. Her biological maternal grandfather was
Gnaeus Domitius Lucanus, adoptive maternal grandfather was
Gnaeus Domitius Tullus and maternal step-grandfather was
Lucius Catilius Severus. Lucilla's father served as consul in 109 and the date of his second consulship is unknown. Lucilla through her mother had inherited a great fortune, which included a tile and brick factory near
Rome, close to the river
Tiber. The factory provided bricks to some of Rome's most famous monuments including the
Colosseum,
Pantheon and the
Market of Trajan, and exported bricks to
France,
Spain,
North Africa and all over the Mediterranean. The factory, or part of it, has been excavated at
Bomarzo, 40 miles north of Rome. ==Marriage==