He successfully invaded Galicia and held most of the country until he was defeated in 1387 .
In 1386 , John of Gaunt pressed the claim for his wife ( and himself ) , to the throne of Castile .
John of Gaunt successfully invaded Galicia and held most of the country until John of Gaunt was defeated in 1387 .
In 1386 , John of Gaunt pressed the claim for his wife ( and himself ) , to the throne of Castile .