Yáng Bóyán 楊伯喦 (fl. 1242–1260+), zì Yànzhān 彥瞻, hào Yǒngzhāi 泳齋, self-styled Dàijùn rén 代郡人 (after the family’s pre-Sòng ancestral seat, though Dàijùn had long been in Jīn territory by his lifetime). Late-Southern-Sòng official; great-grandson of Yáng Cúnzhōng 楊存中 (the Yáng Héwáng, a leading Southern-Sòng general). Yáng held Gōngbù láng zhī Qúzhōu 工部郎知衢州 in Chúnyòu (1241–1252). Zhōu Mì’s 周密 Yúnyān guòyǎn lù 雲煙過眼錄 records his collection of Xuānhé imperial paintings, placing the entry after Gāo Kègōng 高克恭 and Hú Yǒngzhī 胡詠之 — suggesting Yáng was still alive in the early Yuán. His chief surviving work is the Liùtiē bǔ 六帖補 (KR3k0037), a 20-juan supplement to the BáiKǒng liùtiē; he also wrote a Jiǔjīng bǔyùn 九經補韻 (lost). Lǚ Wǔ 呂午’s preface (1242) praises his philological skill.