From the info I have already posted, it seems a big coincidence that I have found a grave for Robert Hall and his wife Helen Malcolm, are these the brother and sister of your Thomas Hall and Jean Malcolm
In other words 2 brothers married married 2 sisters.
If you sign on to
www.scotlandspeople.gov.uk you should be able to check burials for 1854 online
Up until 1854 burial records in Scotland were the responsibility of the church, in 1855 they became the responsibility of the local councils, to bring in consistancy of recording. Unfortunately the Dollar records 1855-1876 seem to be lost so unless something can be found on a headstone, you may never know (frustrating )
If you can find a grave location on the 1854 records let me know and then I will know where to look.
There is one recorded death of a Hall in Dollar between 1850-1854 and that is in 1850 can anyone tell us the first name on this record
Presumably the McArthur-Moir names did not mean anything to you