The Irish Annals fix the birth of this illustrious saint in 527, and his death in 599. In his youth he studied some time in Wales under a celebrated and holy abbot named Docus, and afterwards in Ireland under St. Finian, to whose famous school, in his monastery of Cluain-Irraird the lovers of true wisdom repaired from all sides. The zeal and labors of St. Kenny, in propagating the practice of Christian perfection throughout Ireland, have ranked him among the most glorious saints whose virtue has been the greatest ornament of that island.
St. Kenny was intimately connected by holy friendship with St. Columkille, whom he sometimes visited in the isle of Hij. He founded himself the great monastery of Achadbho, (or The Ox”s Field,) which grew up into a town, and was formerly the seat of the bishops of Ossory, who now reside at Kilkenny, a city which takes its name from this saint, that word signifying Cell or Church of Kenny.
(Source: Butler’s Lives of the Saints)
In the first ages of the Church the day sacred to our Blessed Lady, under her great title of Mother of God, was January 1. Evident traces of this devotion remain in the liturgy proper to the feast of the Circumcision, which is now kept on that day. Many churches having petitioned for a special festival in honor of Our Lady’s divine maternity, a day, usually in the month of October, was granted by the Holy See for its celebration. By a decree of the Sacred Congregation of Rites, April 24, 1914, the eleventh of October was assigned. Pius IX raised it to a double of the second class and extended it to the Universal Church.
All Catholics believe that Mary is the Mother of God. This does not mean that she is not a creature of God, nor that God did not exist before she was created. It means that He who was her Son was a Divine Person. In Christ there are two natures: the nature of God and the nature of man; but in Him there is only one Person, a Divine Person, the Second Person of the Blessed Trinity. Hence all that may be predicated of either nature many with propriety be said of the Savior in the concrete form, without distinguishing the two natures. So we may say that God was born of the Blessed Virgin Mary. We then refer to the Person of the Son of God. Who is both God and Man. Christ, Who is God, was born according to His human nature of the Blessed Virgin. She is, therefore, truly the Mother of God.
(Source: The New Roman Missal, Rev. F. X. Lasance)