Beatrice of Bar was the marchioness of Tuscany by marriage to Boniface III of Tuscany, and Regent of Tuscany from 1052 until her death, during the minority of and in co-regency with, her daughter Mati
Beatrice's sarcophagus, now located in the Campo Santo at Pisa.
Boniface III, son of Tedald of Canossa and the father of Matilda of Tuscany, was the most powerful north Italian prince of his age. By inheritance he was count of Brescia, Canossa, Ferrara, Florence,
Beatrice of Lorraine
…Beatrice of Bar (also Beatrix; c. 1020 – 18 April 1076) was the marchioness of Tuscany by marriage to Boniface III of Tuscany, and Regent of Tuscany from 1052 until her death, during the minority of and in co-regency with, her daughter Matilda. She was the daughter of Frederick…
Miniature of Boniface from the early twelfth-century manuscript of Donizo's Vita Mathildis (Codex Vat. Lat. 4922, fol. 28v.). The script down the side reads: Te redimat Sothér Bonifaci marchio duxque (May the Saviour redeem you Boniface, duke and margrave).