François Joseph, Duke of Guise
François Joseph de Lorraine( Paris, 28 August 1670 – 16 March 1675, Paris), Duke of Guise, Duke of Alençon and Duke of Angoulême, was the only son of Louis Joseph de Lorraine, Duke of Guise and Élisabeth Marguerite d' Orléans," suo jure" duchess of Alençon.
Joan of Valois, Duchess of Alençon
Joan of Valois( 13 September 1409, in Blois – 19 May 1432, in Angers) was the only surviving child of Charles, Duke of Orléans, and Isabella of Valois.
She held the title Duchess of Alençon when married to John II of Alençon.
Françoise d'Alençon
Françoise d'Alençon (1490 – September 14, 1550) was the eldest daughter of René of Alençon and Margaret of Lorraine, and the younger sister and despoiled heiress of Charles IV, Duke of Alençon.
The sister and heiress of Charles IV of Alençon, she was despoiled of her heritage by her sister-in-law Marguerite of Angoulême, sister of King Francis I of France.
Her son Antoine, however, went on to marry Jeanne III of Navarre, born of the second marriage of Marguerite with Henry II of Navarre.
The grandson of Françoise and Marguerite, Henry de Bourbon, would become King of France and Navarre.
Robert of Alençon
Robert of Alençon( 1344 – 1377) was the son of Charles II of Alençon and Maria de La Cerda y Lara.
He succeeded his father in 1346 as Count of Perche.
On 5 April 1374 he married Jeanne( d. aft. 20 January 1407), the daughter of John I, Viscount of Rohan.
They had one son, Charles( 1375 – 1377), who did not survive his father.
René, Duke of Alençon
René of Alençon (1454 – 1 November 1492, Chateau d'Alençon, age 37–38), was the son of John II of Alençon and Marie of Armagnac.
Marie of Brittany, Lady of La Guerche
Marie of Brittany (18 February 1391 – 18 December 1446) was the Countess of Perche and Lady of La-Guerche from 1396 until 1414, and the Countess of Alençon from 1404 until 1414.
In 1414, Marie’s titles became Duchess of Alençon, Countess of Perche, Lady of La-Guerche, when Charles VI of France raised her husband John's county of Alençon to a duchy.
After the death of her husband in 1415, Marie retained the title of Lady of La-Guerche when her son, John II took the titles of Duke of Alençon and Count of Perche.
Marie was the link between the House of Montfort of the duchy of Brittany and the ducal House of Valois-Alençon.
Marie of Armagnac
Marie of Armagnac (c. 1420–1473) was a French noblewoman, daughter of John IV of Armagnac and his second wife, Isabella of Navarre.
Through her son, she would eventually become the great-grandmother of Henry IV of France.
Mary of Bourbon
Mary of Bourbon or Marie de Bourbon( 29 October 1515 – 28 September 1538) was a daughter of Charles, Duke of Vendôme, and Françoise d' Alençon, daughter of René, Duke of Alençon.
Mary was the subject of marriage negotiations of James V of Scotland.
He visited her in France, but subsequently married Madeleine of Valois.
Mary died two years later.
Charles III, Count of Alençon
Charles III of Alençon( 1337 – 5 July 1375, Lyon) was the eldest son of Charles II of Alençon and Maria de la Cerda.
He succeeded his father as Count of Alençon in 1346, but resigned the county to his brother Peter II of Alençon in 1361 to take up an ecclesiastical career.
On 13 July 1365, he was made Archbishop of Lyon.
As archbishop, he firmly resisted royal encroachment on his rights as Primate of France.
John I, Duke of Alençon
John I of Alençon, called the Sage( 1385 – 25 October 1415), was a French nobleman, killed at the Battle of Agincourt.
John was born in Château d' Essay, the son of Peter II of Alençon and Marie de Chamaillard.
In 1404, he succeeded his father as Count of Alençon and Perche.
He was made Duke of Alençon in 1414.
He commanded the second division of the French army at the Battle of Agincourt.
When the English broke through the first division, he led a countercharge.
He is sometimes credited with killing Edward, Duke of York, wounding Humphrey, Duke of Gloucester, and cutting an ornament from the crown of Henry V of England; but he was then overpowered by the King's bodyguard, and slain by the Welsh nobleman Dafydd Gam before he could yield himself.

Question: Which country René, Duke Of Alençon's mother is from?
Answer: French