John III of Castile and Leon

Juan, III de Castilla i León
João, IV of Portugal

Title:	13th Monarch of Castile and Leon
Term in office:	...–...
Predecessor:	King Sancho V
Successor:	King Alfonso XIII
Title:	Monarch of Portugal
Term in office:	...–...
Predecessor:	KIng Henrique I
Successor:	King Alfonso VI
Birth:
Date:	...
Place:	...
Death:
Date:	...
Place:	...
Profession:	...
Relgious Affiliation:	Catholic

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Preceded by: Sancho IV	King of Castile and Leon	Succeeded by: Alfonso XIII Alfonso VI of Portugal
Henrique I	King of Portugal