Thanks for the replies chums. Mellings was indeed in 210 Sqn in the summer of 1918.
However, I am still having difficulties with his victories with 2 Wing. According to other sources he was still at Redcar under instruction in October 1916 and so the September 1916 claim seems questionable. The 12 November 1916 claim could be possible, but it all hinges on when he joined 2 Wing. He is very active in 1917, and one source I have states that the Driven Down claim in June 1917 actually crashed on it's own aerodrome and so... did he award himself this victory?
More questions....I love it!