Sir John Shelton was the son of Sir John Shelton

Sir John Shelton

Sir John Shelton of Carrow, courtier, was, through marriage, the uncle of King Henry VIII's second Queen, Anne Boleyn, and controller of the joint household of the King's daughters, Princess Mary and Princess Elizabeth.-Life:...

 and Anne Boleyn

Anne Shelton (courtier)

Anne Shelton née Boleyn was the elder sister of Thomas Boleyn, 1st Earl of Wiltshire, and an aunt of his daughter, Queen Anne Boleyn, the second wife of King Henry VIII.-Life:...

, the aunt of Queen Anne Boleyn. John's sister, Margaret Shelton was possibly the mistress of Henry VIII

Henry VIII of England

Henry VIII was King of England from 21 April 1509 until his death. He was Lord, and later King, of Ireland, as well as continuing the nominal claim by the English monarchs to the Kingdom of France...

 of England during 1535. He was born c.1503 and died in 1558.

He inherited the family seat at Shelton, Norfolk and was High Sheriff of Norfolk and Suffolk

High Sheriff of Norfolk and Suffolk

This is a list of High Sheriffs of Norfolk and Suffolk. The High Sheriff is the oldest secular office under the Crown and is appointed annually by the Crown. He was originally the principal law enforcement officer in the county and presided at the Assizes and other important county meetings...

 in 1523 and 1554.

He married Margaret Parker, daughter of Henry Parker, 10th Baron Morley

Henry Parker, 10th Baron Morley

Henry Parker, 10th Baron Morley , was an English peer and translator, Lord of Morley, Hingham, Hockering, &c., in Norfolk. He was the son of Alice Parker, 9th Baroness Morley, née Lovel Henry Parker, 10th Baron Morley (1476/1480/1481 – 3 December 1553/1556), was an English peer and translator, Lord...

. Their children were:

• Sir Ralph Shelton
• Anne Shelton
• Alice Shelton
• Mary Shelton
  Mary Scudamore
  Mary Scudamore was a courtier and the daughter of Sir John Shelton of Shelton Hall, Norfolk and his wife, Margaret Parker. She was one of only six women who were appointed to the Privy chamber of Elizabeth I...
  
  
• Thomas Shelton