Mary was christened August 3, 1659 in Darsham, Suffolk, England. She died October 29, 1709.

National Archives (UK)
Reference: KNY 529 372 x 1
Acknowledgement of receipt
By Dame Mary Catlyn from Thomas Glemham, Richard Bokenham and wife Catherine, Mary Knyvett, and Oliver le Neve and wife Jane, (the coheirs of Sir John Knyvett) of £800 derived from mortgage of 1656 by Thomas Knyvett to Sir Thomas Bedingfield of Fundenhall Wood and other property, 1703, (1656-1703).

Reference: KNY 895-927 372 x 6
Letters from Mary Knyvett, Darsham (co. Suffolk) to her brother Oliver Le Neve
Family matters inc. administration of the Ashwellthorpe estate and their proposed removal from Darsham to Ashwellthorpe, Oliver's marriage and his wife's death, death of Tom Knyvett at Portsmouth of smallpox, purchase of a pendulum clock in London, and local news inc. death of Mrs. Sarah North and parting of Sir Edmund Bacon and his wife. Also refs. to collection of medals, Daniel Whaite of North Glemham a skillful builder, and le Neve's pardon following Hobart duel, (1703-1709 and nd).