| Hangul: | 조인벽 |
| Rr: | Jo In-byeok |
| Mr: | Cho Inbyŏk |
| Hangulph: | 양렬 |
| Rrph: | Yangnyeol |
| Mrph: | Yangnyŏl |
| Othername1: | Honorary Title (given by King Taejo in 1392/3) |
| Hangul1: | 용원부원군 |
| Rr1: | Yongwon-buwongun |
| Mr1: | Yongwŏn-buwŏn'gun |
Cho In-byŏk (13301393), was a military official in the Late Goryeo dynasty who came from the Hanyang Cho clan. He was the husband of Princess Jeonghwa, who was the sister of the founder of the Joseon dynasty, Yi Sŏng-gye, who granted him the title Internal Prince Yongwon when the dynasty was established.[1]
Cho In-byŏk was born into the Hanyang Cho clan in 1330 as a son of Cho Ton and his wife, Lady Yi, who was the daughter of Yi Hong-bok from the Ganseong Yi clan. He had three younger brothers: Cho In-gyŏng, Cho In-gyu, and Cho In-ok .[2]
His ancestors traced back Goryeo period as a local family from Yongjin-hyeon . His great-grandfather, Cho Hwi, conspired with T'ak Ch'ŏng and revolted in Ssangseong in 1258 during King Gojong's reign.[3] After they reached the north of Hwaju and surrendered to the Yuan dynasty, the position of Ssangseong General Government Office was established, to which the Ch'oe family were hereditarily appointed governors from generation to generation.[4]
In 1361 (10th year of King Gongmin's reign), Cho (along with Pyŏn An-nyŏl and others) contributed when the Red Turbans invaded Goryeo.[5] In 1363, he also contributed to subjugate Kim Yong's Rebellion .
In 1372, Hobaldo, Janghaema, and others came to attacked Yiseong and Ganggye, Cho went out as a judge and subjugated the enemy in Gaju .[6] Then, when the Japanese plundered Hamju and Bukcheongju, he marched out and ambushed the soldiers, defeating the Japanese and beheaded at least 70 people. From this achievement, he was worshiped as a .[7]
After King U was expelled to Ganghwa Island, his son, King Chang, ascended the throne. Around 1388, it was believed that U's birthday was in Dodang, so Cho was sent alongside Ku Sŏng-no to Ganghwa in order to present clothes for him.[8]
When U was in Ganghwa, he was immediately moved to Yeoheung-gun led by Cho, Chi Yong-gi, U Hong-su, and Yu Chun . Not long after that, Chang was dethroned and killed alongside his father due to the claims that he was not a true descendant of the House of Wang, but a descendant of Sin Ton.
In 1389 (1st year reign of King Gongyang), Cho was promoted into the position of in Gyeongjin.[9] However, when he was rewarded for his service to the country, he was believed to already be deceased.[10]
After the new Joseon dynasty was established, Pyŏn An-nyŏl, Wang An-dŏk, Chi Yong-gi, Yi Wŏn-gye, Chŏng Chi, and Ch'oe Kong-ch'ŏl all became the second rank merit subjects.[11]