《宋书·列传·卷九十二》
杜慧度，是杜瑗的第五个儿子，开始当州的主簿，流民督护，接着升官九真太守。
慧度，瑗第五子也。初为州主簿，流民督护，迁九真太守。
Du Huidu was the fifth son of Du Yuan, who first served as the chief clerk of the state and the督护 of the migrants. He was then promoted to be the prefect of Jiuzhen.