Sun Yuanhua

Sun Yuanhua (1581 or 1582 – 7 September 1632), also known as Ignatius Sun,^[a] was a Chinese mandarin under the late Ming. A Catholic convert, he was a protégé of Paul Xu (né Xu Guangqi). Like his mentor, he advocated repelling the Manchu invasion by modernizing Chinese weaponry and wrote treatises on geometry and military science influenced by the Jesuits' European knowledge. From 1630 to 1632, he served as governor of Denglai, a Ming district around Dengzhou and Laizhou in northern Shandong. He was deposed by the mutiny of Kong Youde and Geng Zhongming, after which he was arrested and executed by the Ming for having failed to crush their rebellion with sufficient severity.

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