Based on Genesis 43:12 ("double money"), a play on the name of the Mishneh Torah.
1488 to 1575.
Rabbi Joseph Caro was born in Spain, but following the expulsion wandered through Turkey, Bulgaria and Greece, settling finally in Safed in the Land of Israel.
A comprehensive commentary on the Mishneh Torah. Many passages are identical to those in Caro's other works, the Beit Yosef and the Shulhan 'Arukh.
The Kesef Mishneh makes use of the Maggid Mishneh commentary by Rabbi Vidal di Tolosa, and has a similar purpose.