Commentary Par XII 47

Zephyr is the west wind.  For the association of Dominic with the west and Francis with the east, see Bertoldi (Bert.1913.1), p. 47 (n. 27), adding the details that for Dante, the Florentine, the main Dominican church (S. Maria Novella) was situated in the western part of the city, while the main Franciscan church (S. Croce) was located in eastern Florence.