The award was ratified in 1179: the left bank of the River Nervión became part of Castile, while the rest of Biscay, Durangaldea and Álava (east from the Bayas River) were to stay with Navarre.
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Since 1379, when John I of Castile became the Lord of Biscay, the lordship got integrated into the Crown of Castile, and eventually the Kingdom of Spain.
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The Lordship of Biscay was in the hands of the Haro family until 1370, when it was inherited, by his maternal side, by John I of Castile, who also inherited by his father's side the Kingdom of Castile.
Biscay | Bay of Biscay | Lordship and Barony of Hailes | Durango, Biscay | Lord of Biscay | Provand's Lordship | Lordship of L'Isle-Jourdain | Lordship of Glamorgan | Lordship of Chios | Lordship of Champlain | ''Lordship Lane (Dulwich)#Lordship Lane station | His Lordship's Kindness | His Lordship's Dilemma |