Alfonso X of Castile and Leon

King of Castile from 1252 to 1284

In the political history of Spain, Alfonso X of Castile and Leon is one of the names the record keeps returning to.

The record lists Alfonso X of Castile and Leon as King of Castile from 1252 to 1284.

Alfonso X of Castile and Leon was born at Toledo in 1221. His recorded nationality is Spain.

Power then ran through courts, church and inheritance. A ruler's reach ended roughly where the roads did.

He served as Monarch of Castile and Leon (1252–1284).

He is described as writer, astronomer and composer.

His name is attached above all to him to sponsor the creation of the Alfonsine tables, and the Alphonsus crater on the Moon is named after him. What survives of a political career is usually not the speeches but the institutions left behind.

That the career was made in Spain is not incidental: the institutions available, the franchise, and the constraints of the moment all shaped what could be attempted.

Alfonso X of Castile and Leon died in 1284, aged 63. The assessment continues, as it does for anyone who held power - which is the ordinary fate of a political life.

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