Maestro del polittico della cappella medici
St. John the Baptist with Saints Zenobius and Reparata

First half of the 14th century
Museo dell'Opera del Duomo (Florence)

Saint Reparata was Florence's patron before it adopted John the Baptist. Zenobius was the city's bishop in the 4th century.

More of St. John the Baptist
More of St. Reparata
More of St. Zenobius

Source: Wikimedia Commons