From this online biographical entry:
Alongside his career in church music, Palestrina was quick to seize business opportunities in the secular world. In the late 1550’s he sold wine from his family vineyard to the church where he was currently working, San Giovanni in Laterano. His business activities intensified in the 1580s when, after the death of his first wife, he married Virginia Dormoli, the rich widow of a furrier. Running the furrier’s business took much of his time over the next decade, although Palestrina may have used its profits to subsidise his many publications of music.