No, it doesn’t mean he got the DFC.
The three LG entries are simply his promotion to commissioned rank and his subsequent promotions. You have to go back a page or two for each entry to work out exactly what each entry means.
So, on the 19/9/43, he was promoted from 1198086 Flight Sergeant Robert Edwin Lewis Wombey to 169508 Pilot Officer Wombey.
On the 19/3/44 he was promoted to Flying Officer and on the 19/9/45 was promoted again to Flight Lieutenant.
His original Service Number was one of a batch issued to those joining in April 1940 or after through Cardington.
Hope this helps.
Regards,
kev35