Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
Anne Russell, Countess of Warwick
Anne Dudley( née Russell), Countess of Warwick( 1548/ 1549 – 9 February 1604) was an English noblewoman, and a lady- in- waiting and close friend of Elizabeth I.
She was the third wife of Ambrose Dudley, 3rd Earl of Warwick.
Margaret De Patta
Margaret De Patta(" née" Strong; 1903 – 1964) was born in Tacoma, Washington, and grew up in San Diego, California.
She died in Oakland, California.
She was an American jewelry designer active in the mid-century jewelry movement.
Her innovative jewelry was influenced by the" Bauhaus school, constructivism, and democratic ideals".
Her work is collected in many major museums including the Smithsonian American Art Museum, the Los Angeles County Museum of Art, and the Oakland Museum of California.
The first major retrospective of her work," Space- Light- Structure: The Jewelry of Margaret De Patta," opened at the Museum of Arts and Design in 2012.
The Velvet da Vinci gallery in San Francisco showed some of her works in" The De Patta Project: New Jewelry Made With Old Stones Acquired from the Estate of Margaret De Patta( 1903- 1964)."
Esther Koplowitz, Marquise of Cubas
Esther María Koplowitz y Romero de Juseu, 7th Countess of Casa Peñalver, is a Spanish billionaire businesswoman and philanthropist.
Margaret de Loveyne
Margaret de Loveyne( died May 1408) was a daughter of Sir Nicholas Loveyne and his second wife Margaret de Vere.
She inherited extensive property and her second husband was High Sheriff of Surrey and Sussex.
Margaret de Beaumont, 7th Countess of Warwick
Margaret de Beaumont, 7th Countess of Warwick or Margaret de Neubourg or Margery de Newburgh (died 3 June 1253) was the daughter of Henry de Beaumont, 5th Earl of Warwick and Margaret D'Oyly.
She was the sister and heiress of Thomas de Beaumont, 6th Earl of Warwick and became the 7th Countess of Warwick in her own right.
She married firstly John Marshal (died October 1242) and, secondly, John de Plessis.
The latter was a great favourite of King Henry III of England who, in 1247, created him the 7th Earl of Warwick and subsequently Count of Warwick.
He died on 20 February 1263.
There was no issue by either of these marriages
and so, at Margaret's death, the estates passed to her cousin, William Mauduit, who became the 8th Earl.
William Mauduit, 8th Earl of Warwick
William Mauduit, 8th Earl of Warwick or William Maudit( c. 1221 – 8 January 1268) was an English nobleman and participant in the Second Barons' War.
He was the son of Lady Alice de Newburgh( daughter of 4th Earl of Warwick from his second wife, Alice de Harcourt) and William de Mauduit, and thus the grandson of Waleran de Beaumont, 4th Earl of Warwick.
His father was Lord of Hanslope and hereditary Chamberlain of the Exchequer, a title that went back to another William Mauduit who held that office for King Henry I of England.
After the death of his half- cousin, Margaret de Beaumont, 7th Countess of Warwick" suo jure" – without issue in June 1253 – he succeeded to the title Earl of Warwick which was passed down to him.
William adhered to King Henry III in the Second Barons' War of 1264 – 67.
During that time, there was a surprise attack on Warwick Castle, his residence, by the forces of Simon de Montfort, 6th Earl of Leicester from Kenilworth Castle, led by John Giffard.
According to 15th- century chronicler John Rous, the walls along the northeastern side of Warwick Castle were destroyed, so" that it should be no strength to the king".
William and his wife were then taken as prisoners to Kenilworth Castle and were held there until the payment of a ransom of nineteen hundred marks was given.
William married Alice de Segrave, daughter of Gilbert de Segrave( son of Stephen de Segrave and his first wife) and Amabil de Chaucombe, but had no issue from the marriage.
When he died, his estates passed to his sister Isabel who had married William de Beauchamp, Lord of Elmley.
Isabel died shortly after her brother, and the title passed to her son William de Beauchamp, 9th Earl of Warwick.
Henry de Beaumont, 5th Earl of Warwick
Henry de Beaumont, 5th Earl of Warwick (c. 1192 – 10 October 1229), Earl of Warwick, and by marriage Lord of Hocknorton (Hook Norton) and Hedenton (Headington) in Oxfordshire, was the son of Waleran de Beaumont, 4th Earl of Warwick and Margaret.
He was also known as Henry de Newburgh.
Abhinay Muthoo
Abhinay Muthoo is the Dean of" Warwick in London", a role which will enhance the University of Warwick's presence in the capital.
He is also the Co- Director of the Warwick Policy Lab and a Professor of Economics in the Department of Economics, University of Warwick.
He became the Dean of Warwick in London on 1 August 2016, after eight years as the Head of the Department of Economics at the University of Warwick.
Elizabeth Berkeley, Countess of Warwick
Elizabeth de Berkeley, Countess of Warwick and Baroness Lisle( 1386 – 28 December 1422), was an English noblewoman and heiress.
She was the only child of Thomas de Berkeley, 5th Baron Berkeley, and Margaret de Lisle, 3rd Baroness Lisle.
With her father's death in 1417, Elizabeth and her husband Richard de Beauchamp, 13th Earl of Warwick, became involved in an inheritance dispute with her cousin James Berkeley, initiating one of the longest lawsuits in English history.

Question: Who is Margaret De Beaumont, 7Th Countess Of Warwick's paternal grandfather?
Answer: Waleran de Beaumont, 4th Earl of Warwick