The south rose window is a pictorial display of the Beatitudes. Jesus sits in the center of the window and is surrounded by eight saints of the Americas who exemplify the beatitudes.
The Latin word for blessed is beatus, from which we get the word beatitude.
The beatitudes are eight statements taught by Jesus. They are concerned with virtue and how a believer in Jesus Christ can achieve that virtue.
The beatitudes are found at Matthew 5: 3-12
Blessed are the poor in spirit, for theirs is the kingdom of heaven.
Blessed are they who mourn, for they shall be comforted.
Blessed are the meek, for they shall possess the earth.
Blessed are they who hunger and thirst for justice, for they shall be satisfied.
Blessed are the merciful, for they shall obtain mercy.
Blessed are the pure of heart, for they shall see God.
Blessed are the peacemakers, for they shall be called sons of God.
Blessed are they who suffer persecution for justice sake, for theirs is the kingdom of heaven.