- Born in Navarre of a Navarrese father and an Aragonese mother.
- Served Charles II of Navarre and Pedro IV of Aragon.
- Chamberlain to Pedro IV of Aragon. [Pedro, ch. 34: 86]
- Saved Enrique of Trastámara from being killed by Pedro IV of Aragon, when the latter yielded to Pedro of Castile's pressure to capture his half-brother.
Joham Rramirez d'Arelhano