He was born circa 1722.
In 1782, he lived in Mier in household number 14. The church census recorded that he was married, español, and 60 years old. His household included 4 people, one of whom was likely a servant:
Miguel de Alegria Lazcano, married, español, age 60.
Ana Maria de Cuellar, married, española, age 28.
Jose Miguel de Alegria, a young child, español, age 3.
Maria Dolores de Alegria, a young child, india, age 5.
In 1767, he was granted Revilla 6 by the King of Spain.