Choe Hyo-won
Choe Hyo-won (Hangul: 최효원, Hanja: 崔孝元; 23 February 1638 – 15 August 1672), of the Haeju Choe clan, was the father of Royal Noble Consort Suk and the maternal grandfather of King Yeongjo of Joseon. In February 1734, under Yeongjo's command, he was posthumously promoted to Chief State Councillor. He was married to Hong Gye-nam's daughter, Lady Hong from the Namyang Hong clan. They had two daughters and one son. Their second daughter eventually became the birth mother of Yi Geum, King Yeongjo. During his lifetime, Choi Hyo-won served as a Deputy Apology  Officer (행충무위부사과, 行忠武衛副司果). He died on August 15, 1672, at the age of 35 and is buried in Jingwan-dong, Eunpyeong District, Seoul, near the tombs of Choi Su-gang, Hong Gye-nam and Hong Gye-ung. The tombs of Choi Tae-il and Choi Mal-jeong were located in Bulgwan-dong, Eunpyeong District.