In 1571, Yusai HOSOKAWA (the adopted son of Mototsune), who was given land at Nishioka in Yamashiro Province by Nobunaga ODA, became its owner, and renovated it into a formidable castle with a double moat.
1571年(元亀2年)、山城国西岡一帯を織田信長より与えられ、城主となった細川幽斎(幽斎、元常の養子)は二重の堀を持つ堅固な城に改修。