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- Margarita Torres Sevilla and Peter A. Linehan, A misattributed tomb and its implications: cardinal Ordoño Álvarez and his friends and relations, Rivista di Storia della Chiesa in Italia, Anno LVII nº-1 (2003), pp. 53–63.
- Ordoño Álvarez, Ordonio Alurz, Ordonius, Ordhon, Oddon, Ordeone, Ordeano.
- From 1278
- The Spanish Church and the Papacy in the Thirteenth Century
- Chapter 12: The Spanish Church and the Papacy in the 13th Century
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