Hsu Kwang-ch'i, born in the southwest district now called Xujiahui in 1562, was one of the first senior Chinese officals to enter the Christian Church, being pupil, convert, and friend of the great Jesuit missionary Matteo Ricci. He was a scholar and the author of several important works, among them being a treatise written in 1616 in defence of the Christian Religion. His family property was afterwards acquired by the Jesuits and became the site of the catholic Cathedral, the Church of St.Ignatius. His grave is (was?) at the southwest corner of the church.
His name lives on in the name of the area Xujiahui (spelt Siccawei by old Shanghailanders in imitation of the Shanghainese pronunciation), which means Xu Family (estate).