Which surname has the purest blood relationship with the calligrapher in history?

The proportion of talents surnamed Chu is very high, and there are many celebrities. In the past, there was one of the most important couplets in the ancestral hall of Chu surname. The first couplet is "Doctor of Confucian Classics Supplementing Historical Records", and the second couplet is "Preface of Famous Wild Goose Pagoda", which looks very modest, but in fact, the pride in the bones is beyond words. "Doctor of Confucian Classics" refers to Chu Sunshao, a famous Confucian scholar in the Western Han Dynasty. He is from Yingchuan (now Yuzhou, Henan) and lives in Peixian (now Lunan, northern Jiangsu). He and Liu Bang are half villagers. He is particularly good at studying the Book of Songs, and there is a school called "Chu Family Studies" in "Lushi", which was initiated by him. His most outstanding contribution is to supplement Sima Qian's Historical Records. Don't think that Historical Records was written by Sima Qian alone. In fact, many of the contents in Historical Records that we see today are supplemented by later generations, and Chu Sunshao is one of the most important supplements. If we remove that part of Chu Bu today, the historical record will be incomplete.