Saint Brendan’s Isle, also spelled
St Brendan’s Isle, is a
phantom island, or mythical island, supposedly situated in the North Atlantic somewhere west of Northern Africa. It is named after the
Saint Brendan who founded the
Clonfert monastery and monastic school. It is said to have been discovered by the saint and his followers while they were traveling across the ocean, evangelizing islands. It appeared on numerous maps in
Christopher Columbus's time, most notably
Martin Behaim's
Erdapfel of 1492. It is referred to as
La isla de San Borondón or
isla de Samborombón in Spanish.