Sima Guang
As well as his achievements as a statesman and historian, Sima Guang was also a lexicographer (who perhaps edited the "Jiyun"), and spent decades compiling his 1066 "Leipian" ("Classified Chapters", cf. the Yupian) dictionary. It was based on the Shuowen Jiezi, and included 31,319 Chinese characters, many of which were coined in the Song and Tang Dynasty. His "Family Precepts of Sima Guang (司馬溫公家訓)" is also widely known and studied in China and Japan.