Footnotes on the English Translation of “A Narrative on Calligraphy” Part IV
(48). The families of Wang (王), Xie (謝), Xi (郗), and Yu (庾) were four renowned families that were known for raising many distinguished gentries and calligraphers during the Eastern Jin Dyansty:
王、謝、郗、庾均為東晉大族。其子弟多身居高位，書法上亦多有造詣。其中王家的王導、王羲之、王獻之，謝家的謝尚、謝奕、謝安，郗家的郗愔，庾家的庾亮等都是書法名家。Source: 馬永強《書譜•書譜譯注》。鄭州市: 河南美術出版社，1993，p.68。