Thanks people for your help.
I have found a Benjamin Lun/Lunn, Baptised 1713 at Sheriff Hutton, York on FindMyPast, but I only have membership of Ancestry.com. Can someone check to see if it could be 'Lund'?. The records are found under the Yorkshire Baptisms set. I guess, based on the date or marriage, we would have to look pre 1729 for Benjamin's birth although no doubt there were under age marriages taking place at the time.
Now some of the information i have for the family comes from transcriptions "Church of England. Holy Trinity Church, Goodramgate (York, Yorkshire) 1573 - 1812 by Cook, Robert Beilby. Title No 181072_41. You can view this via familysearch I found this very useful as in some parts you get a baptism, name and occupation of father, mother name, and names of the grandparents! There is a list of surnames and christen names in the index. What confuses me is that i believe the 1744 marriage of Benjamin and Mary at St Maurice should be there but its not recorded, (at least a Benjamin Lund is not in the index). There is an introduction to the transcriptions which may be of interest to people, but why no 1744 marriage of Benjamin and Mary? Their marriage detais i recorded from the record set England, Select Marriages, 1538–1973.
Regards
Eric