English: Ban Biao family tree (with Xiutu block).

References:
(2011). "Two Notes on the Xiongnu Ancestry of the Authors of "Han-shu"". Central Asiatic Journal 55 (1): 33-36. ISSN 0008-9192.
(2008年) 《 Ban Gu's history of early China》、​Amherst (N.Y.)： Cambria press、​第44頁 ISBN： 978-1-60497-561-1.

(2008年) 《 Ban Gu's history of early China》、​Amherst (N.Y.)： Cambria press、​第44頁 ISBN： 978-1-60497-561-1. "The “Basic Annals of Emperor Wen” is a chapter that Biao seems to have written entirely. Ban Biao appears as the commentator in the final remarks of the chapter. The passage states, 贊曰﹕臣外祖兄弟為元帝侍中，語臣曰元帝多才藝，美史書．The Eulogy states: My (your minister’s) maternal grandmother’s older and younger brothers were made the palace retainers of Emperor Yuan. They informed me that Emperor Yuan had several talents in the arts and considered historical books attractive.
The “minister” in this Eulogy is usually identified as Ban Biao. The Han commentator, Ying Shao, noted that “the annals of both Yuan and Cheng were written by Ban Biao; when ‘chen’ 臣 (i.e., ‘minister’) is used, the speaker is Biao. The distaff relative mentioned is Jin Chang” 元，成帝紀皆班固父彪所作，臣則彪自說也．外祖，金敞也."