Before 3rd November 1701 [his father] John Lethieullier and [his mother] Elizabeth Smart were married.
On 3rd November 1701 Smart Lethieullier was born to John Lethieullier and Elizabeth Smart at Aldersbrook Manor House. He was educated at Eton College [Map] and Trinity College, Oxford University; he was awarded MA in 1723.
In 1724 Smart Lethieullier [aged 22] was elected Fellow of the Royal Society.
In 1725 Smart Lethieullier [aged 23] was elected Fellow of the Society of Antiquaries of London.
In February 1726 Smart Lethieullier [aged 24] and Margaret Sloper were married. There were no chilren from the marriage.
In 1733 Smart Lethieullier [aged 31] was elected a Member of the Spalding Gentlemen's Society.
In 1737 [his father] John Lethieullier died. Smart Lethieullier [aged 35] inherited Aldersbrook Manor House.
Vesta Monumenta. 1752. Plate 2.7. Greensted Church with Objects Commemorating St. Edmund. The central image of the Church of St. Andrew, Greensted [Map], Essex, is rendered along with the burial shrine of St. Edmund and a seal fragment from the Abbey of Bury St. Edmunds [Map], both in Suffolk. Engraving by George Vertue [aged 68] after Smart Lethieullier [aged 50] and John Lydgate.
In 1758 Smart Lethieullier [aged 56] served as High Sheriff of Essex.
William of Worcester's Chronicle of England
William of Worcester, born around 1415, and died around 1482 was secretary to John Fastolf, the renowned soldier of the Hundred Years War, during which time he collected documents, letters, and wrote a record of events. Following their return to England in 1440 William was witness to major events. Twice in his chronicle he uses the first person: 1. when writing about the murder of Thomas, 7th Baron Scales, in 1460, he writes '… and I saw him lying naked in the cemetery near the porch of the church of St. Mary Overie in Southwark …' and 2. describing King Edward IV's entry into London in 1461 he writes '… proclaimed that all the people themselves were to recognize and acknowledge Edward as king. I was present and heard this, and immediately went down with them into the city'. William’s Chronicle is rich in detail. It is the source of much information about the Wars of the Roses, including the term 'Diabolical Marriage' to describe the marriage of Queen Elizabeth Woodville’s brother John’s marriage to Katherine, Dowager Duchess of Norfolk, he aged twenty, she sixty-five or more, and the story about a paper crown being placed in mockery on the severed head of Richard, 3rd Duke of York.
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On 27th August 1760 Smart Lethieullier [aged 58] died at Aldersbrook Manor House. He was buried at St Mary's Church, Little Iford. His niece Mary Lethieullier inherited Aldersbrook Manor House.
Kings Wessex: Great x 20 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 17 Grand Son of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 23 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 18 Grand Son of Maredudd ap Bleddyn King Powys
Kings Godwinson: Great x 20 Grand Son of King Harold II of England
Kings England: Great x 10 Grand Son of King Edward III of England
Kings Scotland: Great x 17 Grand Son of King William I of Scotland
Kings France: Great x 12 Grand Son of King Philip IV of France
Kings Duke Aquitaine: Great x 24 Grand Son of Ranulf I Duke Aquitaine
Kings Spain: Great x 16 Grand Son of Alfonso VII King Castile VII King Leon
Grandfather: John Lethieullier Merchant
father: John Lethieullier 9 x Great Grandson of King Edward III of England
Great x 2 Grandfather: William Hooker of Berkhampstead
Great x 1 Grandfather: Alderman William Hooker
Grandmother: Anne Hooker 8 x Great Granddaughter of King Edward III of England
Great x 3 Grandfather: Thomas Coppinger
Great x 2 Grandfather: Francis Coppinger 6 x Great Grandson of King Edward III of England
Great x 4 Grandfather: William Brooke 10th Baron Cobham 
5 x Great Grandson of King Edward III of England
Great x 3 Grandmother: Frances Brooke 5 x Great Granddaughter of King Edward III of England
Great x 4 Grandmother: Dorothy Neville Baroness Cobham 
4 x Great Granddaughter of King Edward III of England
Great x 1 Grandmother: Lettice Coppinger 7 x Great Granddaughter of King Edward III of England
Smart Lethieullier 10 x Great Grandson of King Edward III of England
mother: Elizabeth Smart