He was born circa 1736. His father was Gaspar de Lombraña, and his mother was Melchora de Ecay Muzquiz. In 1792-93, as executor of Capt Manuel Rodriguez (d.1772, widow Antonia Morales) sells a slave, Maria de la Candelaria Fierro, to Julian de Arocha (BCM 022:0031-36)
On 30 Apr 1755, he requested a dispensation to marry Ana Maria Rodriguez. He was 19 years old.