Bogo de Clare
Bogo de Clare (21 July 1248 – October 1294) was a member of the Anglo-Norman de Clare family, as third son of Richard de Clare (1222–1262), 5th Earl of Hertford and 6th Earl of Gloucester.
Robert de Welles, 2nd Baron Welles
Robert de Welles, 2nd Baron de Welles, Constable of Pendragon Castle was the son of Adam de Welles, 1st Lord of Welles( 1249 – 1311) and Joan d'Engayne( 1265 – 1315).
He married Maud de Clare, daughter of Thomas de Clare, Lord of Thomond( 1245 – 1287) in 1315 without royal licence.
It is said that he did, in fact, have a daughter by Maud de Clare, but historical evidence remains elusive.
The Barony de Welles passed to his brother, Adam de Welles, 3rd Baron Welles( 1304 – 1345) on his death.
He is buried at Greenfield Priory, Greenfield, East Lindsey District, Lincolnshire, England.
Maud de Lacy, Countess of Hertford and Gloucester
Maud de Lacy,( 25 January 1223 – 10 March 1289), was an English noblewoman, being the eldest child of John de Lacy, 2nd Earl of Lincoln, and the wife of Richard de Clare, 5th Earl of Hertford, 6th Earl of Gloucester.
Isabella of Gloucester and Hertford
Isabella de Clare( 2 November 1226 – 10 July 1264) was the daughter of Gilbert de Clare, 4th Earl of Hertford and 5th Earl of Gloucester and Isabel Marshal.
She is also known as" Isabel de Clare", but this is however, the name of many women in her family.
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.
Maud de Clare
Maud de Clare, Baroness de Welles was the eldest daughter of Thomas de Clare, Lord of Inchiquin and Youghal, Lord of Thomond, Lord of Bunratty Castle (1245–1287) and Juliana FitzGerald (1236–1290).
She married two times.
Her first marriage was to Robert de Clifford, 1st Baron de Clifford, 1st Lord of Skipton (1274–1314) on 3 November 1295 by which she had four children.
Her second marriage was to Sir Robert de Welles, 2nd Baron Welles, Constable of Pendragon Castle (
1297–1326) on 16 Nov 1315.
They had no children.
She was born in 1276 in Tewkesbury, Tewkesbury Hundred, Gloucestershire, England and moved to Badlesmere to be near her sister, Margaret de Clare, Baroness Badlesmere.
She died in Badlesmere in 1327 twice a widow.
Rohese de Clare
Rohese de Clare( bef. 1166) was a member of the wealthy and powerful de Clare family and a strong patron of Monmouth Priory.
Eleanor de Clare
Eleanor de Clare, suo jure 6th Lady of Glamorgan( 3 October 1292- 30 June 1337) was a powerful English noblewoman who married Hugh Despenser the Younger and was a granddaughter of Edward I of England.
With her sisters, Elizabeth de Clare and Margaret de Clare, she inherited her father's estates after the death of her brother, Gilbert de Clare, 8th Earl of Gloucester, 7th Earl of Hereford at the Battle of Bannockburn in 1314.
She was born in 1292 at Caerphilly Castle in Glamorgan, Wales and was the eldest daughter of Gilbert de Clare, 6th Earl of Hertford, 7th Earl of Gloucester, 5th Lord of Glamorgan and Princess Joan of Acre.
Abd al-Muttalib
Abd al- Muttalib Shaybah ibn Hashim( c. 497 – 578) was the grandfather of Islamic prophet Muhammad.
Thomas de Clare, Lord of Thomond
Thomas de Clare, 1st Lord of Thomond, 1st Lord of Inchiquin and Youghal (1244×124729 August 1287) was a Hiberno-Norman peer and soldier.
He was the second son of Richard de Clare, 6th Earl of Gloucester and his wife Maud de Lacy, Countess of Gloucester.
In 1272 he served a term as Lieutenant of the Duchy of Aquitaine.
On 26 January 1276 he was granted the Lordship of Thomond by Edward I of England; he spent the next eight years attempting to conquer it from the O'Brien dynasty, kings of Thomond.

Question: Who is Maud De Clare's paternal grandfather?
Answer: Richard de Clare, 6th Earl of Gloucester