Beatrice of Savoy, Lady of Villena
Beatrice of Savoy (1250-1292) was the daughter of Amadeus IV the Count of Savoy and his second wife, Cecile of Baux.
She was a member of the House of Savoy by birth, by her second marriage she became known as Lady of Villena.
Beatrice was a full sister to Boniface, Count of Savoy, as well as two sisters Eleanor and Constance.
She had two older half-sisters from her father's first marriage, an elder Beatrice and Margaret.
Upon the death of her father in 1253, Beatrice received an amount of money as an inheritance.
Upon the death of her ten-year-old brother Count Boniface, he was succeeded by their uncle as Peter II, Count of Savoy.
Upon Peter's death, Beatrice had to renounce her claim on Savoy along with the consent of her mother in favor of the succession of her other uncle as Philip I, Count of Savoy, in the article (dated 21 October 1268)
she is referred to as Contesson possibly to distinguish her from her older half-sister of the same name.
A charter dated 11 August 1266 by Pope Clement IV
presumably tells of Count Philip donating property to his niece "B" most likely referring to Beatrice.
Beatrice was firstly betrothed to James, second son of James I of Aragon
however, the contract was broken on 11 August 1266.
Ten years after the betrothal was broken, James became King of Majorca.
Beatrice firstly married on 21 October 1268 to Peter of Chalon, Seigneur de Châtelbelin, son of Jean l'Antique.
Peter granted property to his wife in 1269.
The couple were married for no more than six years when Peter died, they had no children.
A second marriage took place in 1274 to Manuel of Castile; this was a second marriage for both parties, Manuel's first wife Constance (sister to Beatrice's one-time fiancee James) had died leaving him with two children.
Manuel and Beatrice had one son Juan Manuel who was born in Escalona on May 5, 1282.
Manuel died a year after the birth of their son therefore he was succeeded by their son as Manuel's other son by Constance had died young.
Beatrice cared for her son until her own death nine years later, after which time Juan Manuel was left in the care of his uncle, Sancho IV of Castile.
Princess Catherine Beatrice of Savoy
Catherine Beatrice of Savoy( 6 November 1636, Turin, Piedmont – 27 August 1637) was a Princess of Savoy by birth.
She was the youngest daughter born to Victor Amadeus I, Duke of Savoy, and his French consort, Princess Christine Marie of France.
Princess Maria Beatrice of Savoy
Princess Maria Beatrice of Savoy( born 2 February 1943) is the youngest daughter of Italy's last King, Umberto II, and his wife, Queen Marie José.
Cecile of Baux
Cecile of Baux (1230–1275), was a Countess Consort of Savoy; married in 1244 to Amadeus IV, Count of Savoy.
She was the daughter of Barral of Baux and his wife, Sibylle d'Anduze.
She was the Regent of Savoy during the minority of her son, Boniface, Count of Savoy, from 1253 until 1259.
Beatrice of Viennois
Beatrice of Vienne( 1160 –1230) was a Countess of Savoy by marriage to Humbert III, Count of Savoy.
Princess Maria Pia of Bourbon-Parma
Princess Maria Pia of Bourbon- Parma( née Princess Maria Pia of Savoy; born 24 September 1934) is the eldest daughter of Umberto II of Italy and Marie- José of Belgium.
She is the older sister of Princess Maria Gabriella of Savoy, Vittorio Emanuele, Prince of Naples, and Princess Maria Beatrice of Savoy.
Yolande Louise of Savoy
Yolande Louise of Savoy( 1487–1499), was a Duchess Consort of Savoy; married to Philibert II, Duke of Savoy.
Beatrice of Portugal, Duchess of Savoy
Infanta Beatrice of Portugal( 31 December 1504 – 8 January 1538) was Duchess of Savoy by marriage to Charles III, Duke of Savoy.
She was the Sovereign Countess of Asti from 1531 to 1538.
Maria Beatrice of Savoy
Maria Beatrice of Savoy (Maria Beatrice Vittoria Giuseppina; 6 December 1792 – 15 September 1840) was a Princess of Savoy and Duchess of Modena by marriage.
Beatrice of Savoy
Beatrice of Savoy( c. 1198 – c. 1267) was the daughter of Thomas I of Savoy and Margaret of Geneva.
She was Countess consort of Provence by her marriage to Ramon Berenguer IV, Count of Provence.

Question: Who is Beatrice Of Savoy, Lady Of Villena's maternal grandfather?
Answer: Barral of Baux