Yong-le: Year 13, Month 10, Day 20
21 Nov 1415
The Assistant Commissioner-in-chief Tian Zhen died. Zhen had his origins in Yu-tai County, Yan-zhou Prefecture....He was successively promoted and became assistant commander of Long-qing Guard. For realizing achievements in the pacification of Jiao-zhi, he was promoted to assistant commissioner-in-chief. At this time he died.....
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 13, page 1883