From Rossory Enda went to Killany, in the co. Louth, and there within the bounds of his own principality he set about the construction of a monastery for himself and such religious men as might join him in the service of God. Here also he directed the workmen in the construction of the buildings, and it seems that his sister, too, had a second religious house not far distant, where she appears to have spent a portion of her time. A party of freebooters once passed by laden with booty where Enda and his men were working. The tribesmen seized their weapons to attack the marauders, and Enda himself caught up one of the poles sunk in the soil for a rampart to join in the fray. Just then his sister, who happened to be present, told him to put his hand to his head and remember whose soldier he was. Enda did so, and feeling the tonsure that he wore, he remembered that he was the soldier of Christ, and cast aside at once both his weapon and the spirit of strife that was excited within him. So his sister Fanchea was, as it were, his good angel, and he was always obedient to her instructions. Enda, however, was still only a novice in the religious life, and, therefore, not well qualified to be a guide for others. So his sister said to him, "Go thou to Britain, to the monastery of Rosnat, and there become the humble disciple of Mancenus, the head of that monastery."[152] This monastery of Rosnat is by some writers placed in the valley of Rosina, in Wales, where a certain St. Manchen is said to have founded a religious house. We are inclined to agree with Skene that it was rather the celebrated monastery known as Candida Casa, or Whithern, founded by St. Ninian at the extremity of the peninsula of Galloway. This religious house was also known as the Magnum Monasterium, and sometimes as the monastery of Rosnat. It was dedicated to St. Martin of Tours, and hence it is sometimes called the House of Martin. We are here on firm ground, for we have the express testimony of Bede that Ninian, or Ninias, "had been regularly instructed in Rome in the faith and the mysteries of the truth," that his episcopal see was named after St. Martin, that it was in the province of Bernicia, and that there Ninian had built a stately church, generally called Candida Casa, or the White House, because it was built of stone, which was not usual amongst the Britons.[153] This is a most important statement of Bede, for, as we shall see, very many of the founders of the earliest and the greatest of our Irish monasteries were trained at Whithern, and the founder of Whithern himself was trained at Rome in the faith and mysteries of religion, thus directly connecting the fathers of Irish monasticism with the discipline and dogma of Rome.