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.
Missa L'homme armé (Palestrina)
The Agnus Dei is split into two sections. Agnus Dei I and the Agnus Dei II. Palestrina's mass that was analyzed is his first mass based on the l’homme armé melody. This mass was written for five voices and was a regular cantus-firmus mass as many of the l’homme armé masses. It is said that Palestrina composed it during the 1560s which is within his second volume of masses which contains this mass was published in 1570. The use of a cantus firmus mass was outdated by the time Palestrina composed his mass so when he composed this mass he used the modern style of the time. This new view of the cantus fimus mass gave new life to work.