Villanova University is a private university located in Radnor Township, a suburb northwest of Philadelphia, Pennsylvania, within the Archdiocese of Philadelphia in the United States. Named after Saint Thomas of Villanova, the school is the oldest Catholic university in the Commonwealth of Pennsylvania. In October 1841, two Augustinian friars from Saint Augustine's Church in Philadelphia purchased the 200-acre (81 ha) "Belle Air" estate in Radnor Township with the intention of starting a school. The school, which was called the "Augustinian College of Vilanova", opened in 1842. However, the Philadelphia Nativist Riots of 1844 that burned Saint Augustine's Church in Philadelphia caused financial difficulties for the Augustinians, and the college was closed in February 1845. The college reopened in 1846 and graduated its first class in 1847. In March 1848, the governor of Pennsylvania incorporated the school and gave it the power to grant degrees.