Bf 110 C-4 Crashed Munsgore Lane Borden 1940

I am trying to find information about a Bf110 C-4 that was shot down reportedly on the 9th September 1940. Information I have seen indicates it was hit by anti-aircraft shells crashing into a field Nr Sittingbourne Kent.
Records show this as Munns Gore although this is actually Munsgore Lane.
The crew were killed, I have one name associated with this aircraft as Uffz Georg Alfred Bierling, 26 years old, however I am unable to find the name or rank of the other crew member. This aircraft was part of the ZG76 group.
The reason for my search is a friend of mine was recounting a story of this aircraft coming down in 1940. A local man at the time was first on the scene, he told my friend of 'taking a knights cross and Mothers cross from the wreckage plus a great coat and insignia that was on the lapels' He gave the two medals and insignia to my friend during their conversation. My friend has stated that it would be nice if these medal's could be returned to their rightful families. Hence my search for the two crew members. Can anyone help me with this search.