Michelangelo's The Holy Family with this person is also known as the Doni tondo; he is also depicted as an infant in the Madonna of the Rocks.
Donatello's 1415 marble of this person with a forked beard and book is in the Duomo while El Greco's unorthodox depiction of him with a bear-skin and cross has a lamb at lower-right. Masaccio depicts him with St. Jerome on the Colonna Altarpiece and shows his death alongside that of St. Peter on the Pisa Altar. Rodin depicts him "Preaching" and the Ansidei Altarpiece includes Nicholas of Bari and this man. Ghirlandaio relates his life in Santa Maria Novella. Michelangelo's The Holy Family with this person is also known as the Doni tondo; he is also depicted as an infant in the Madonna of the Rocks. FTP, name this Saint often depicted in art performing his most famous function: baptizing Jesus Christ.
Donatello's 1415 marble of this person with a forked beard and book is in the Duomo while El Greco's unorthodox depiction of him with a bear-skin and cross has a lamb at lower-right.
St. John the Baptist (prompt on St. John)