From my research there appear to be 3 distinct groups of Bartles in Lincolnshire: around Grimsby in the NE, where the name Nicholas recurs; around Crowle (my ancestors)in the NW where Francis and John are common; and in the SE round the Wash, which is the area your reference relates to. I am stuck with a Francis Bartle whose birth I cannot find, although his children's baptism and his death are recorded. He lived in Crowle and his first daughter was born in 1662. So he would have been born around 1640 +/- 2 years. This is in the middle of the turbulent years of the Civil War when records were not well kept. Another possibility is that people moved around at that time because of the digging of drainage canals by the Dutchman Vermuyden,although I think this was mainly done by imported labour from Holland and Belgium - the work was strongly opposed by the locals, whose livelihood (such as waterfowling) was destroyed by the drainage of the marshes. There was constant vandalism and worse. So much so, Vermuyden gave up in NW. Lincs and moved to the south of the county and Cambridgeshire where his efforts had the blessing of the Duke of Bedford, if not the population. A French-speaking community continued to survive for several generations in one or two villages there.
So did Frances Bartle move from elsewhere to NW Lincs to work on the canals, or was he even a foreigner, or the descendant of one, who came over with Vermuyden. Bartle, spelt Bartl or Barthel respectively in Germany and France, is quite a common name. Or am I completely up a gum tree and he was just a local lad whose name never got put in the records when he was baptised, if indeed he was. I'll be doing some more research soon in Lincs so will post something if I find anything. Cheers Warwick Bartle (Kurrajong, Australia)