"It was the pious boast of the city of Colchester, for many ages, that St. Helena was born within its walls; and though this honour has been disputed, it is certain that she was a Romano-British princess.
She embraced Christianity late in life; but her incomparable faith and piety greatly influenced her son Constantine, the first Christian emperor, and served to kindle a holy zeal in the hearts of the Roman people.
Forgetful of her high dignity, she delighted to assist at the Divine Office amidst the poor; and by her alms-deeds showed herself a mother to the indigent and distressed.
In her eightieth year she mad a pilgrimage to Jerusalem, with the ardent desire of discovering the Cross on which our Blessed Redeemer suffered. After many labours, three crosses were found on Mount Calvary, together with the nails and the inscription recorded by the Evangelists. It still remained to identify the true Cross of Our Lord. By the advice of the bishop, Macarius, the three were applied to a woman afflicted with an incurable disease, and no sooner had the third touched her than she arose, perfectly healed.
The pious empress, transported with joy, built a most glorious church on Mount Calvary to receive the precious relic, sending portions of it to Rome and Constantinople, where they were solemnly exposed to the adoration of the faithful.
In the year 312, Constantine found himself attacked by Maxentius with vastly superior forces, and the very existence of his empire threatened. In this crisis he bethought him of the crucified Christian God Whom his mother Helena worshipped, and kneeling down, prayed God to reveal Himself and give him the victory.
Suddenly, at noonday, a cross of fire was seen by his army in the calm and cloudless sky, and beneath it the words, 'In hoc signo vinces' - 'By this sign thou shalt conquer'.
By divine command, Constantine made a standard like the cross he had seen, which was borne at the head of his troops; and under this Christian ensign they marched against the enemy, and obtained a complete victory.
Shortly after, Helena herself returned to Rome, where she expired, in 328".