She is married to John I "Lackland" Plantagenet, King of England.
The couple was engaged in 1176.
Engagement to Isabel (Avise) Countess of Gloucester. Under agreement that John would inherit County of Gloucester.They got married on August 29, 1189 at Marlboro Castle.
The couple were divorced on August 30, 1199.
Obtained as a result of close blood relation reportedly in 'tertio gradu consanguantitis"
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