Original: The institutions were new to Korea at the time of their inception — Yonhi was one of the first modern colleges, founded originally as Chosun Christian College in March, 1915, and Severance has its roots in the first modern medical center in Korea, Gwanghyewon, founded in April, 1885.
Simplified: Severance came from the first modern medical center in Korea, Gwanghyewon, which started in April, 1885.