Father of Ko Gyeong-myeong, Governor of Gangwon and Vice Director of the Hongmungwan; pen name Hacheon

| Life | 1502 ~ 1565 |
| Era | 조선 중기 |
| Clan | 장흥 고씨 |
Ko Maeng-yeong (1502-1565) was a mid-Joseon civil official of the Jangheung Ko clan with the pen names Hacheon and Haheon. His father was Ko Un and his son was the Imjin War leader Ko Gyeong-myeong. He passed a special civil examination in 1540 in the second class.
While serving as Yejo Jeongnang he took part in compiling the Veritable Records of Jungjong, then held posts in the Office of the Inspector-General and Office of Censors and served as magistrate of Okcheon, Governor of Gangwon and Vice Director of the Hongmungwan. The series on the Gwangju head house says he also served as Dongbu Seungji, councillor of several ministries and Bodeok of the Crown Prince's tutorial office, and took part with his son in the education of the crown prince.
He had been close to the powerful Yi Ryang, and after Yi Ryang's fall he was impeached, dismissed in 1565, sentenced to exile and died there. After his son and grandsons Ko In-hu and Ko Jong-hu died in the Imjin War, his rank was restored in 1612 on the petition of his grandson Ko Yong-hu, and he was later posthumously made Left State Councillor.
His downfall is explained by his ties to Yi Ryang. His rank was restored in 1612 on the petition of his grandson Ko Yong-hu, and he was later made Left State Councillor posthumously. The loyalty of his son and grandsons thus helped restore the family's honor.
His tomb could not be confirmed here.