[1] In 1396 Joan Ramon, heir of Cardona, was one of the magnates who went to Sicily to assist its new King, Martín.
Joan Ramon, count of Cardona, was one of the generals of King Martin the Young in the Sardinian campaign.
However, once the decision had been pronounced, choosing Ferran de Antequera as the new king of Aragon, the count Joan Ramon I was fervently loyal to the new dynasty and refused to collaborate with the Urgellist revolt of 1413.
In 1418 count Joan Ramon I was the Ambassador of King Alfonso V of Aragon to the Church Council of Constance.
For the occasion of the wedding of his son Joan Ramon II with Joana de Prades, the elderly count authored a beautiful letter of advice and instructions.