“ SIMANCAS, a town of Spain, in the province of Valladolid; 8 m. S.W. of Valladolid, on the road to Zamora and the right bank of the river Pisuerga. Pop. (1900) 1129. Simancas is a town of great antiquity, the Roman Septimanca, with a, citadel dating from the Moorish occupation in the 9th century, a fine bridge of seventeen arches, and many remains of old walls. In 934 it was the scene of a bloody battle between the Moors and Christians. ”