The Will of Hamilton Patterson late of Ballyrea County Down Farmer deceased who died 26 December 1874 at same place was proved at Belfast by the oaths of Isaac Patterson and John Hanna both of Ballyrea (Newtownards) and Isaac Moorhead of Drumreagh (Killinchy) all in same County Farmers the Executors.The transcribed image (first found by Sinann) is also available to view on PRONI Will Calendars.
https://apps.proni.gov.uk/WillsCalendar_IE/WillsSearch.aspxHamilton Patterson 26th December 1874 81 Male Newtownards
His death record is available to view on the GRONI website (a pay-to-view website)
https://geni.nidirect.gov.uk/You can register on GRONI (free) then purchase a few credits to do full searches, view records, etc.
It costs £2.50 (sterling) to view a record. By choosing the "full" option it lets you see the digitised image of the original.
KG
Edited to add:
Will names daughters Annabella, Elizabeth Jane, Mary (otherwise Ferguson), Agnes (otherwise Car**), Martha (otherwise Crawford), and son Thomas. His wife named as Margaret Anderson (otherwise Patterson).