I can not find the baptisms of John Hamilton and Mary THompson kids in DOnaghcloney COI nor Knocknamuckley. Tullylish may be the place they were found. Possibly Robert b May 11, 1858 in Magherana is their child, but that seems very doubtful. John married in 1853 and says he is 22 and has father John. On Dec 6,1829 John and Jane Hamilton have son John bapt and he was born some month on the 5th, The family was in Tullyh clear and the rest a scrawl suggesting Tullyheron.
Possibly the Hull tree was on familysearch or on Rootsweb when it worked but the format of one record might be recognizable to you. This is a dau of Sam and Letitia.
ID: I127
Name: MARTHA ANN HAMILTON
Sex: F
Birth: 17 MAY 1887 in BALLYDOUGAN, CO. DOWN
Death: 9 OCT 1961 in @ HOME
Reference Number: 1 720