Yan Hui is not surnamed Yan?

Not surnamed Yan

Yan Hui (52 1 ~ 48 1), a native of Lu at the end of the Spring and Autumn Period, was Confucius' most proud disciple and unfortunately died young. Since the Han Dynasty, Yan Hui has been ranked as the first of 72 sages, and sometimes only Yan Hui enjoys it when offering sacrifices to Confucius. Since then, posthumous title has been added to the rulers of all dynasties: Emperor Taizong honored him as a "master", Emperor Xuanzong honored him as "Duke Yan", Song Zhenzong as "Duke Yan" and Yuan Wenzong as "Duke Yan Fu". In the ninth year of Jiajing in Ming Dynasty, it was renamed "Restoration of Saints". There is also a "Fuxing Temple" in Qufu, Shandong.