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.
Nile mosaic of Palestrina
In the 17th century, Palestrina passed to the Barberini family, who between 1624 and 1626 removed most of the mosaic from its setting, without recording the overall composition, and, after further movements and damage, put it on exhibition in the Palazzo Barberini in Palestrina, where it remains. The mosaic was restored and repaired on numerous occasions, but careful watercolors of the sections were made for Cassiano dal Pozzo before the initial restoration in the "opificio" of St. Peter's. Helen Whitehouse's rediscovery of the long-lost watercolors enabled a reconstruction of the surviving segments in a more meaningful way although much remains uncertain about the original composition. The mosaic has been a major feature of the "Museo Nazionale Prenestino" in Palazzo Barberini, Palestrina (not the one in Rome) since 1953