Goryeo official, the first man of Tamna to enter the central government
| Era | 고려 전기 |
| Clan | 제주 고씨 |
Go Yu (高維) was an early Goryeo official from the Go clan, the hereditary seongju lineage of Tamna. His dates are not recorded. According to a Jeju Culture Institute article citing the Tamna Gi-nyeon and the Jeju biographical dictionary, he placed first in the Namseong-si examination in 1045 (11th year of King Jeongjong) and passed the Dongdang-si the next year in third place. Jeju was then called Takrado, a special administrative unit to which no magistrate was sent, so his success is regarded as the first time a man of Tamna entered the central stage.
The clan tradition holds that he later served as Right Remonstrant, Deputy Commander of the Northeastern Circuit and Vice Director of the Royal Library, and supervised the state examination in 1071 under King Munjong. This career could not be checked against a separate source here and is given as family tradition. The clan counts him as a son of the mid-founder Go Mal-lo.
The man traditionally called his son is Go Jo-gi, who rose to Jungseo-sirang-pyeongjangsa. Wikipedia describes Go Jo-gi as his son or grandson, so sources differ. Accounts agree that Go Yu opened the first step of the Tamna Go family becoming a central-office family.
The Namseong-si was a stage on the road to central office. His first-place result in 1045 and third-place result at the Dongdang-si the next year are recorded; the article notes that final graduates usually numbered about 14.
Jeju, then called Takrado, had no appointed magistrate and was governed by the seongju lineage. A man from there passing the capital examination was rare and is cited as an example of Goryeo-Tamna relations.
The clan remembers him as having held posts such as Right Remonstrant and as a son of Go Mal-lo. His descendant Go Jo-gi reached the chief-minister rank, continuing the family's presence at court.
His tomb was not confirmed.
His son (by tradition) Go Jo-gi rose to Jungseo-sirang-pyeongjangsa.