The entry for the date when Hiroyo's father WAKE no Kiyomaro died (April 4, 799) in "Nihon Koki" (Later Chronicle of Japan) contains the description that -- Hiroyo concurrently assumed the offices of Shikibu shoyu (Junior Assistant of the Ministry of Ceremonies) and Daigaku Betto (Chancellor of the University) (Daigaku no kami; Director of the Bureau of Education), and, as his father Kiyomaro had wished, located his private residence south of the daigaku-ryo the Kobunin where he collected thousands of Chinese classics from inside and outside Japan, and donated 0.4 square kilometers of new rice fields for awarding scholarship funds.
『日本後紀』にある広世の父・和気清麻呂の薨条（延暦18年2月乙未（21日）条）に、広世が式部少輔と大学別当（大学頭）を兼務し、父・清麻呂の遺志を継いで大学寮の南側にあった私邸を弘文院として内外の経書数千巻を集め、また墾田40町を寄付して学問料を支給したと記されている。