Known for settling disputes, St. Elizabeth was called the Peacemaker. When her son Alfonso declared war on his father because he was jealous of the attention being paid by Diniz to his illegitimate sons, it was Elizabeth who rode between the armies, reconciling the two sides. On another occasion, she rode to Estremoz despite being ill to keep the army of Affonso, by then King Alfonso IV, from fighting that of Castile. Alfonso, angry at the mistreatment his daughter Maria was suffering at the hands of her husband, the king of Castile, had ordered an attack. St. Elizabeth stopped the fighting, but the exertion proved to be too much for her and she fell ill, dying shortly thereafter.
St. Elizabeth was buried in Coimbra, and she was canonized in 1625 by Urban VIII.
O God, the author of peace and lover of charity, who didst adorn Saint Elizabeth of Portugal with a marvellous grace for reconciling those in conflict: grant, through her intercession; that we may become peacemakers, and so be called children of God; through Jesus Christ thy Son our Lord, who liveth and reigneth with thee, in the unity of the Holy Spirit, ever one God, world without end. Amen.