Siragusa was born in Morovis, Puerto Rico, on 11 March 1914, to parents Juan García Reyes de Morovis and Alberta Cortés de Ciales.
At some point, she married Agustín Siragusa. The couple had a daughter, Sylvia Siragusa García. According to her daughter, she worked from the age of 14 until 80, and neither she nor her husband ever needed to seek financial assistance from the government.
When asked about the secret to long life, she attributed it to a good marriage.
Her age was verified by Gabriel Ainsworth, and validated by LongeviQuest on 19 March 2024.
* “Doña Julia Siragusa: 110 Años de vida y un secreto revelado” – Telemundo 51, 11 March 2024
* “Julia García Cortés nació en Morovis el 11 de marzo de 1914 y cumplió hoy 111 años de vida” – Conociendo a Puerto Rico, 11 March 2025