William of Efak is the writer of the month of March in the library of Ibiza Can Ventosa and the Historical Archive, Can Botino. Born in 1930 in Equatorial Guinea, then still Spanish colony. His father was a colonial guard Guardia Civil and his mother belonged to the tribe of the fang. con 2 years was transferred to Manacor (Mallorca), where he was in charge of a sister of his father. After the Spanish Civil War, He combined his studies with work.