It is likely that Robert Holborn, cited as working with Peter Pett of Deptford at this time was a relative of Richard Hoborn, 'Cousin of Commissioner Pett'. Peter Pett of Deptford was the son of Peter of Harwich (d.1554). His sister married John Chapman, Master Shipwright, whose own son Richard was born in 1620 and Master Shipwright of Woolwich and Deptford dockyards. the shipwright who was to build the "Ark", raised in the Pett household, "as in all probability was Mathew Baker" with whom, from 1570, Peter Pett was associated in the works at Dover.’