Which calligrapher is the little old man in Xiyuan?

Qianlong calligrapher. Yang (1754- 18 16) was born in Gui 'an (now Huzhou), Zhejiang Province, and was named Qiushi. Born in the 19th year of Emperor Gaozong Qianlong in Qing Dynasty, he was a calligrapher in Qianlong period. Injong Jiaqing died in the 21st year, aged 63. He is eccentric and never gets married. In his early years, he was famous for his poems. His poem "Autumn Willow in the West Lake" was famous for a while, and it was known as "Yang Qiuliu", along with Xing Dian and Shi as "Mr. Nanxun San". ?