Aguilar was born c. 1792 in Spain.
In 1827, Aguilar built the Jolly Boy saloon on the town square. The bar and billiard saloon was operated by various people until the 1880s when it was demolished. It A reconstructed Jolly Boy Saloon and Restaurant is located near the site of the original saloon.
His daughter Rosaria was born c. 1827. His son Blas was alcalde of San Juan Capistrano in 1847 and his adobe still stands there. and Blas' son Jesus was Bell Ringer of Mission San Juan Capistrano for several decades.
In 1841 Aguilar was Suplente (Substitute Justice of the Peace or Mayor) of San Diego.