Hi Spendlove,     Pleased to receive your reply  regarding marriage of Edmund Marsden and Mary.
Edmund Marsden was Christened 10th April 1645 at Baslow being the 7th child of Edmund & Francisco Marsden (nee Jackson) who married 6th July 1635 at Bakewell, Derbys. You are correct in thinking that I have calculated roughly the date of Edmund & Marys marriage as their 1st child  Godfrey was Christened 12th February 1683/84 at Baslow, so the marriage could be any where between 1682 and 1685.  I am fairly sure that they would have married as  the family in general all married  but some left it a little late.  I know that Edmund died in 1711 and I have a copy of his Will.  Thank you for sending the information on the Marsden family by David Dalrymple-Smith - I gave him a lot of information on the Marsden family over 10 years but  not sure if I agree with some of the assumptions he has made.