Kimje (935) — the same event in Goryeosa, Goryeosa Jeolyo and Samguk Yusa

Goryeosa: Gyeonhwon's son Singeom confines his father at Bulu of Geumsan Temple and kills his younger brother Geumgang.; Goryeosa Jeolyo: Gyeon…

What each source says

Goryeosa (History of Goryeo) · AD 935 · Kimje

Gyeonhwon's son Singeom confines his father at Bulu of Geumsan Temple and kills his younger brother Geumgang.

○(乙未)十八年春三月,甄萱子神劒,幽其父於金山佛宇,殺其弟金剛。
Location: 世家 卷2 太祖 十八年

Goryeosa Jeolyo (Essentials of Goryeo History) · AD 935 · 金堤

Gyeon Hwon's eldest son Singeom imprisons his father at Geumsan temple and kills his younger brother Geumgang

甄萱子神劍幽其父於金山佛宇,殺其弟金剛。
Location: 권1 太祖神聖大王 十八年

Samguk Yusa (Memorabilia of the Three Kingdoms) · AD 935

In the third month Singeom and Yeongsun confined Gyeon Hwon at Buu in Geumsan, killed Geumgang and established himself.

至清泰二年乙未春三月。與英順等勸神劍。幽萱於金山佛宇
Location: 紀異第二 後百濟 甄萱

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