Henry of Grosmont, 1st Duke of Lancaster
Henry of Grosmont, 1st Duke of Lancaster, 4th Earl of Leicester and Lancaster, Earl of Derby (– 23 March 1361), of Bolingbroke Castle in Lincolnshire, was a member of the English royal family and a prominent English diplomat, politician, and soldier.
He was the wealthiest and most powerful peer of the realm.
The son and heir of Henry, 3rd Earl of Lancaster, and Maud Chaworth, he became one of King Edward III's most trusted captains in the early phases of the Hundred Years' War and distinguished himself with victory in the Battle of Auberoche.
He was a founding member and the second Knight of the Order of the Garter in 1348, and in 1351 was created Duke of Lancaster.
An intelligent and reflective man, Grosmont taught himself to write and was the author of the book "Livre de seyntz medicines", a highly personal devotional treatise.
He is remembered as one of the founders and early patrons of Corpus Christi College, Cambridge, which was established by two guilds of the town in 1352.
Barbara Sidney, Countess of Leicester
Barbara Sidney, Countess of Leicester( 1563 – 24 May 1621) was a Welsh heiress, and the first wife of Robert Sidney, 1st Earl of Leicester.
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."
Joan II, Countess of Burgundy
Joan II, Countess of Burgundy( 15 January 1292 – 21 January 1330), was Queen of France by marriage to Philip V of France, and ruling Countess of Burgundy and Countess of Artois.
She was the eldest daughter and heiress of Otto IV, Count of Burgundy, and Mahaut, Countess of Artois.
Anne Yelverton
Anne Yelverton( 1628–1698) was Countess of Manchester and Countess of Halifax.
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.
Marie d'Albret, Countess of Rethel
Marie d' Albret, Countess of Rethel, Countess of Nevers( 25 March 1491 – 27 October 1549) was the suo jure Countess of Rethel, a title which she inherited at the age of nine upon the death of her mother, Charlotte of Nevers, Sovereign Countess of Rethel, on 23 August 1500.
She was the wife of Charles II of Cleves, Count of Nevers.
Amice (Countess)
Amice( died 1215) was a Countess of Rochefort and" suo jure" countess of Leicester.
She is associated with England but is thought to have spent most of her life in France.
She was the daughter of Robert de Beaumont, 3rd Earl of Leicester and Petronilla de Grandmesnil.
Maud, Countess of Leicester
Maud of Lancaster (4 April 1340 – 10 April 1362), also known as Matilda, Countess of Hainault, was a 14th-century English noblewoman who married into the Bavarian royal family.
The eldest daughter of Henry of Grosmont, 1st Duke of Lancaster and Earl of Leicester, and his wife Isabel de Beaumont
, she was born at Bolingbroke Castle in Lindsey.
Thomas Coke, 8th Earl of Leicester
Thomas Edward Coke, 8th Earl of Leicester( born 6 July 1965), is the son of Edward Coke, 7th Earl of Leicester, and Valeria Phyllis Potter.
He is the current Earl of Leicester.
From 1994 to 2015, when he succeeded into the Earldom, he was styled Viscount Coke.

Question: When did Maud, Countess Of Leicester's father die?
Answer: 23 March 1361