Dù Jiàlù 杜價祿 (zì Bīnwǔ 賓五), Qīng-period stipended licentiate (lǐnshēng 廩生) of Jiāngyīn 江陰 (Jiāngsū), fl. Dàoguāng era. Prefaced Wáng Xīxīn 王錫鑫’s paediatric handbook Yòukē qièyào 幼科切要 (KR3ej025) in 1847 (Dàoguāng 27 dīngwèi) at Chóngqìng during a visit to the author. The preface is dated the same day as Wáng’s self-preface — both signed Dàoguāng 27 guìyuè 桂月 (eighth lunar month) first day, suggesting a small Chóngqìng publication ceremony attended by both. No other biographical detail recorded.