Takenouchi no Sukune was supposedly the son of Princess Kagehime, and is said to be grandson to Prince Hikofutsuoshinomakoto (彦太忍信命).

[1] Japanese historians have theorized a possible inference to Takenouchi no Sukune found in ancient Korea's Samguk Sagi where a name called "Udojugun (于道朱君/우도주군)" is mentioned.

[2] In the book, it states that during the time a Japanese envoy "Galnago (葛那古/갈나고)" stayed in Silla, a royal named "Seok Uro (昔于老/석우로)" accompanied him.

In addition, Wakan Sansai Zue also mentions Takenouchi no Sukune's accomplishments during the Silla-Wa War (新羅・倭戦争) further adding credence to his involvement during the Silla period.

[3] As a similar sounding name appears in Korean records while also having historical documents that support his authenticity to an extent, scholars deduced that though not completely accurate, Takenouchi no Sukune can be considered an individual who had truly existed.