Margherita Colonna
She was born in Palestrina about 1255. Her father, Oddone Colonna, died when she was about two years old. Her mother, who was also named Margherita and who was the sister of Matteo Rosso Orsini and a pious woman, died when Margherita was probably a little over ten years old. Margherita was left in the care of her older brothers.
O magnum mysterium (Palestrina)
O magnum mysterium is a six-part motet by Giovanni Pierluigi da Palestrina, based on the responsorial chant of the same name, and was written for the celebration of Christmas. The piece is intended to express the joy and awe that was felt by the shepherds as they celebrated and worshiped the Christ-child in the manger on Christmas Eve. Palestrina took the text for this piece from the first half of the third and fourth Responsories of Matins on Christmas Day. The text has been set many times by numerous composers, such as Palestrina, Poulenc, Lauridsen, and Morales.