Demetrio Alonso Castrillo
Demetrio Alonso Castrillo was a Spanish politician and lawyer.
Born in Valderas, he was Minister of the Interior during the reign of Alfonso XIII
A member of the Liberal Party, he was elected successively between 1881 and 1905 and became the Congress deputy for León.
He served as Minister of the Interior from January 2 to April 3, 1911 in the cabinet of José Canalejas.