Yáng Xióng
Yang Xiong (53 BC-18 AD), scholar, poet and lexicographer, author of the first Chinese dialect dictionary 方言[Fang1 yan2]
Fāng yán
the first Chinese dialect dictionary, edited by Yang Xiong 揚雄|扬雄[Yang2 Xiong2] in 1st century, containing over 9000 characters