Mary de Lellis Gough
Sister Mary de Lellis Gough( 15 February 1892 – 7 April 1983) was an Irish – American mathematician.
Thomas de Monthermer, 2nd Baron Monthermer
Thomas de Monthermer, 2nd Baron Monthermer (4 October 1301 – 24 June 1340) was the son of Ralph de Monthermer, 1st Baron Monthermer and Joan of Acre, the daughter of King Edward I of England.
He was a first cousin of King Edward III of England.
Mary de Monthermer
Mary MacDuff, Countess of Fife ("née" de Monthermer; October 1297 – circa 1371) was an English noblewoman.
She was a daughter of Ralph de Monthermer, 1st Baron Monthermer and his wife Joan of Acre.
Other sources have her being born in 1298.
Etan Boritzer
Etan Boritzer( born 1950) is an American writer of children ’s literature who is best known for his book" What is God?" first published in 1989.
His best selling" What is?" illustrated children's book series on character education and difficult subjects for children is a popular teaching guide for parents, teachers and child- life professionals.
Boritzer gained national critical acclaim after" What is God?" was published in 1989 although the book has caused controversy from religious fundamentalists for its universalist views.
The other current books in the" What is?" series include
What is Love?,
What is Death?,
What is Beautiful?,
What is Funny?,
What is Right?,
What is Peace?,
What is Money?,
What is Dreaming?,
What is a Friend?,
What is True?,
What is a Family?,
What is a Feeling?"
The series is now also translated into 15 languages.
Boritzer was first published in 1963 at the age of 13 when he wrote an essay in his English class at Wade Junior High School in the Bronx, New York on the assassination of John F. Kennedy.
His essay was included in a special anthology by New York City public school children compiled and published by the New York City Department of Education.
Boritzer now lives in Venice, California and maintains his publishing office there also.
He has helped numerous other authors to get published through" How to Get Your Book Published!" programs.
Boritzer is also a yoga teacher who teaches regular classes locally and guest- teaches nationally.
He is also recognized nationally as an erudite speaker on" The Teachings of the Buddha."
John Montagu, 1st Baron Montagu
John de Montacute was a 14th- century English nobleman and loyal servant of King Edward III.
He was the son of William Montagu, 1st Earl of Salisbury by his wife Catherine Grandison, and younger brother of William de Montacute, 2nd Earl of Salisbury( 1328 – 1397).
He also had several younger sisters.
Montacute was summoned to parliament in 1357.
Jean Froissart named" Lord John Mountacute" as one of the participants with King Edward III at the Siege of Calais in 1349.
He married Margaret de Monthermer, daughter and heiress of Thomas de Monthermer, 2nd Baron de Monthermer by his wife Margaret de Brewes.
Their children included John Montacute, 3rd Earl of Salisbury( – 1400); Eleanor Montacute, who married John Dinham( 1359 – 1428); Thomas Montagu, Dean of Salisbury Cathedral; and Sybil Montagu, Prioress of Amesbury.
Montagu's descendants quartered the arms of Monthermer:" Or, an eagle displayed vert beaked and membered gules".
Theodred II (Bishop of Elmham)
Theodred II was a medieval Bishop of Elmham.
The date of Theodred's consecration unknown, but the date of his death was sometime between 995 and 997.
Mary de Rachewiltz
Mary de Rachewiltz( born Mary Rudge; July 9, 1925) is an Italian- American poet and translator.
Terence Robinson
Terence D. Robinson( date of birth and death unknown) was a male wrestler who competed for England.
Brian Saunders (weightlifter)
Brian Saunders( date of birth and death unknown) was a male weightlifter who competed for England.
Joan of Acre
Joan of Acre (April 1272 – 23 April 1307) was an English princess, a daughter of King Edward I of England and Queen Eleanor of Castile.
The name "Acre" derives from her birthplace in the Holy Land while her parents were on a crusade.
She was married twice; her first husband was Gilbert de Clare, 7th Earl of Gloucester, one of the most powerful nobles in her father's kingdom; her second husband was Ralph de Monthermer, a squire in her household whom she married in secret.
Joan is most notable for the claim that miracles have allegedly taken place at her grave, and for the multiple references to her in literature.

Question: What is the date of birth of Mary De Monthermer's mother?