After traveling to New Spain, Massanet was one of the Franciscan priests who founded the College of Santa Cruz in what is present day Querétaro, Mexico, in 1683.
[1] In April 1689, Massanet accompanied Alonso De León, the governor of Coahuila, on his fourth and final expedition in search of Fort St. Louis, which had been abandoned by the French by that time.
[1] In October 1693, after problems such as crop failure, floods, supply shortages, and hostilities with the Nabedache, who blamed the Europeans for bringing epidemics such as smallpox to the region, Massanet and the remaining priests chose to bury San Francisco de los Tejas's cannon and bells, and burned and abandoned the site.
[4][5] The party would reach Monclova in February 1694, at which point Massanet was asked by the viceroy to propose new sites for missions in Coahuila.
He declined, noting that, without proper support, such efforts would be a failure similar to that seen at San Francisco de los Tejas.