Menantius expects to have returned to witness the wedding of his friend Amintor with Aspatia , his betrothed .
Instead the King has ordered friend to marry Melantius 's sister , Evadne , in order to honour Amintor 's 's brother 's military achievements .
Menantius expects to have returned to witness the wedding of his friend Amintor with Aspatia , his betrothed , but instead the King has ordered Amintor to marry Melantius 's sister , Evadne , in order to honour her brother 's military achievements .