th  Legend said that in a day in the year 1156, some gentlemen of Salamanca, exploring the banks of the Duero River, which border was the kingdom of Leon,
knights seeking a place to build a fortress, where find on their way to cull a hermit name was Amanda, who had participated in the Crusades, the hermit persuaded the knights to build their fort near the chapel that he built in these places.

Fundarce to the Order will be established as a main principle of defending the Christian faith, then the distinguished name of the Order of San Julián Perera, perhaps because this was the holy shrine of the owner of Loving.

Members of the Order were the three vows of obedience, poverty and perpetual chastity. They ate beef three days per week, sleeping clothes, silent in the church
 
Their habit was a white woolen tunic, scapular with a small chapel, and on it, when they left the convent, a layer of color or black tabard. The hair is kept cut above the ear and beard round.

When in time of peace, are not employed in duties fighters, remained detained in the convent.

The founder, Don Suero, died in combat, succeeded Don Fernandez Gomez, a fellow at the foundation.

The years it took to order estubo always at the service of Christian monarchs against the Arabs.

To recapture the town of Alcántara, the Order moved to that place and from that time began to be called the Order of Alcántara and Perera, prevail in the end, the latter name.

The Order not only fought against the Moors, but also mixed in the politics of the day.

The Master Don Gonzalo Martinez was sentenced to death for treason by order of King Alfonso, and beheaded.

The decline of the Order begins during the reign of the Catholic Monarchs.
Wanted the monarchy to become national unity was needed, and the incorporation of Maestrazgo to the Crown.

When no longer required the military power of the Order of Alcántara was guided by other fields and established a school at the University of Alcalá, which was subsequently transferred to Salamanca.