Hello Peter
As we have just recently had a similar Thread of this nature,i can tell you that it is very difficult to find out that info,as all the Convoys were kept as best a secret as could be with all information of any kind not recorded by the Captains of any Ship involved.
How ever there is a possibility that you may be able to find out something through the Southampton Archives??
Other than that even I think his CRS10 Documentation would not have anymore info,only his Record as far as when he joined the Convoys.
Hope that you will be able to get more info
Cheers
There is only one J Davaney listed on Convoy (As Deceased) but not your Man
DEVANEY, Carpenter, JOHN, S.S. Traveller (Liverpool), Merchant Navy. 26th January 1942. Age 47. Son of Patrick and Elizabeth Devaney. Panel 109.(Tower Hill).