ˌɔn wˈʌn əkˈeɪʒən, kwˈiːn mɚɹˈiːə ʌv ˈæɹæɡən ænd kwˈiːn mɚɹˈiːə ʌv kˈæstaɪl, ðə tˈuː kˈʌzənz ænd sˈɪstɚzɪnlˈɔː, mˈiːdɪˌeɪɾᵻd ðə pˈiːs tɹˈiːɾi bᵻtwˌiːn ˈæɹæɡən ænd kˈæstaɪl ɪn vˈælɐdˌɑːlɪd ˌɔn bᵻhˈæf ʌv ðɛɹ hˈʌsbəndz; ɪt wʌz sˈɛd ðæt ðɛɹ wʊdhɐv bˌɪn pˈiːs ɪn spˈeɪn æt ðæt tˈaɪm ɪf ðə kwˈiːn ʌv kˈæstaɪl hæd æz mˈʌtʃ ɐθˈɔːɹɪɾi æz ðə kwˈiːn ʌv ˈæɹæɡən.
On one occasion, Queen Maria of Aragon and Queen Maria of Castile, the two cousins and sisters-in-law, mediated the peace treaty between Aragon and Castile in Valladolid on behalf of their husbands; it was said that there would have been peace in Spain at that time if the Queen of Castile had as much authority as the Queen of Aragon.