She had a younger sister named Giovanna and two half-siblings from her father's second wife, Castellana Centelles: Ottavio, 1st Prince of Trabia, and Margherita.
On 14 December 1543, at the age of fourteen, Laura was married to Don Vincenzo II La Grua-Talamanca, son of the baron of Carini Pietro III and Eleonora Manriquez.
[1] Her father, Cesare Lanza, Count of Trabia, confessed to the killing in a letter which he wrote to Philip II of Spain, but her husband was also suspected on account of rumors that he planned to marry again.
The mayor of Carini, in conjunction with a project to restore the famed castle to its 16th-century appearance, has reopened the case for forensic study.
[2] An Italian TV miniseries L'amaro caso della baronessa di Carini was released in November 1975, starring Janet Ågren and Ugo Pagliai.