Piano 13

Well, not exactly a piano, rather a home made harpsicord, presumably by James Mogford. Gifted at some point to All Saints' Fulham, where it is taken out for concerts from time to time.

Not a name of which I have heard before, but there is a Jeremy Mogford who founded the Browns chain of restaurant. Perhaps this Mogford is or was his son. And there are some more in the hotel business in Oxford.

Reference 1: https://www.allsaints-fulham.org.uk/home.htm. Once a pocket borough, as it were, of the Bishops of London, rather like St. Mary's at Lambeth, once in the pockets of the Archbishops of Canterbury, now a garden museum.  'All Saints is an inclusive parish church, worshipping in the catholic tradition, that welcomes anyone, regardless of age, gender, sexuality, physical ability or ethnic background'.