Dear Sir, I saw your message with interest. My grandfather may have been a relative of this man as he came from Cabra near Rathfriland in Down. I know very little about him except that he too was a David Mark born in 1885 and I have tried to make contact with Mark families in N. Ireland with no success. His father was a David Mark a farmer, a vet and a blacksmith and a Presbyterian.
If you are able to help me I would be grateful for contact.