Background
He was born at Scriven in North Yorkshire, eighth son of Sir Francis Slingsby of Scriven and Mary Percy, daughter of Sir Thomas Percy and sister of Thomas Percy, 7th Earl of Northumberland and Henry Percy, 8th Earl of Northumberland.
He was born at Scriven in North Yorkshire, eighth son of Sir Francis Slingsby of Scriven and Mary Percy, daughter of Sir Thomas Percy and sister of Thomas Percy, 7th Earl of Northumberland and Henry Percy, 8th Earl of Northumberland.
Slingsby was appointed Comptroller of the Navy following the death of Sir Henry Palmer in 1611. The position of Comptroller was placed in the hands of a commission from 1618 to 1628 when Slingsby resumed control. He held the post until his death in 1631.
He lived at Bifrons in Canterbury.
Sir Arthur Slingsby, first of the Slingsby baronets of Bifrons. He was the only brother to leave issue
Walter who fought with distinction in the English Civil War
Henry, Deputy Master of the Mint
Guylford and Margaret also had four daughters, of whom at least two reached adult life:
Anne, who married a grandson of Sir Julius Caesar, Master of the Rolls.
She was still alive, but in great poverty, in 1684, when she petitioned William Sancroft, Archbishop of Canterbury, for redress.
Guildford Slingsby, member of the Irish House of Commons and trusted secretary to Thomas Wentworth, 1st Earl of Strafford.