Early-Míng Tiāntái 天臺 monk-bureaucrat. Lay style Xīnyuán 心源 (also given as Xīnyuán Jìng 心源瀞 / Xīnyuán Yuánjìng 心源圓瀞). Native of Kuàijī 會稽 in Zhèjiāng. Birth and death dates not preserved (active first decades of the fifteenth century, fl. ca. 1410–1440).
He received his early Tiāntái training at Tiānzhúsì 天竺寺 in Hángzhōu under the master Yǔwēng 雨翁, and was a fǎsì (dharma-heir) of Nánzhōu Pǔqià 南洲溥洽 (1346–1426), a leading early-Míng Tiāntái figure. He was subsequently posted to the imperial monastery Chánggānsì 長干寺 in Nánjīng, then appointed under Xuānzōng 宣宗 (r. 1425–1435) as Sēnglùsī yòu shànshì 僧錄司右善世 (“Right Doctrinal Rectifier of the Monastic Registry”) — one of the most senior posts in the Míng monastic bureaucracy.
He compiled the Jiàoshèng fǎshù 教乘法數, a Tiāntái-aligned Buddhist numerical-categories lexicon completed in Xuāndé 6 (1431). The first printing, recorded in his own preface, was 12 juan and structured from the One Mind to the eighty-four-thousand dharma-gates. Bǔ xù gāosēng zhuàn records a later expansion to 40 juan, the form preserved in the Jiāxīng canon (J8). The two 1431 prefaces are separately preserved in the Northern Yǒnglè canon at P189 no. 1630 = KR6s0008. The work belongs to the same YǒnglèXuāndé era fǎshù tradition as Yīrú’s 大明三藏法數 (KR6s0007, 1419).
Source: DILA Buddhist Person Authority A001412; Bǔ xù gāosēng zhuàn 補續高僧傳, j. 25 Nánzhōu Pǔqià zhuàn (X77n1524_p0528b14); Tiāntāishān fāngwài zhì 天台山方外志, j. 7; Fóguāng dà cídiǎn p. 3874.1.