call on Joslyn (Doctors Commons) 2.3.1804
There were two proctors in Doctors Commons called George & Henry Gostling, but that would have been a rather extreme mishearing. More likely this was Thomas Joslyn who had signed the marriage licence of Godwin and Mary Jane Vial in 1801, and he also signed some other adjacent marriage licences. He must have been a clerk of the Consistory Court which was in Knight Rider St where Doctors Commons was, and maybe the term was used for the general area. I think Godwin may have been on the trail of the marriage of Thomas West and Lucy Dallas (see Godwin, Harriet and Goodyer). After calling on Joslyn, Godwin noted Pancras Register, then on the next day called on Goodyer, sexton, Chelsea. The marriage license may have allowed the wedding to take place either in the bride's parish St Pancras or the groom's Chelsea. Sextons may often have had the keeping of the parish registers. As to who was Thomas Joslyn there were many variant spellings of the surname but even so the nearest I could find was Rev Thomas Jocelyn MA appointed vicar of Sittington, Norfolk 1785, and no trace of him in either Alum Ox or Alum Cant, and the wills of Thomas Josselyn farmer 1807 and Thomas Josselyn gent 1821 both of Little Horksley, Essex