Sun Zhang 孫璋

The Regular Palace Attendant Sun Zhang was a eunuch who probably sided with Zhang Rang.

Sun Zhang was one of the twelve Regular Palace Attendants.

Biography
Historical sources don't share much information on the eunuch Sun Zhang. In the sixth month of 185 A.D., which is late July or early August, Sun Zhang and eleven other eunuchs were enfeoffed as full marquises for their good work against Zhang Jiao and the Yellow Turbans.

It is likely that Sun Zhang was part of Zhang Rang's influentious faction.