Actor Lee Yong Joo, known for his role as Jang-gyeong in the classic drama Princess Hours (Goong) that aired in 2006, was reported to have passed away on Saturday, August 29, 2026, at the age of 44. According to information from the Korean entertainment industry, Lee Yong-joo died from a heart attack triggered by dilated cardiomyopathy, a congenital heart disease he had long suffered from. This news was first shared by a close relative through a social media post on the same day.
To remember him, let’s revisit his role as Jang Kyung in Princess Hours. This character is one of the friends of Prince Lee Shin, played by Joo Ji Hoon.











