Greyabbey (on the Ards Peninsula) is full of tombs and memorials. It is right beside Rosemount, which is the present day home of the Montgomery family, and which was established as such around 1607 by James Montgomery (the brother of Sir Hugh Montgomery). One of these memorials (pictured lying flat on the ground in the photo) is of William Montgomery, the author of the Montgomery Manuscripts and other important histories of the Ards and of Ulster-Scots traditions. This same stone also mentions Sir Hugh Montgomery, and as far as I know is the only memorial in Ulster to Sir Hugh. The inscription is hard to read, but as far as I can see it says:
"...The honourable Elizabeth Montgomery died ye 15th of November anno domini Christi 1677 aged 42 years. William Montgomery of Rosemount Esq her only husband continued a widower and so died on ye 7th day of January anno domini 1706 being 74 years old. Hugh first Lord Viscount Montgomery of Ye Great Ardes by his two eldest sons was grandfather of them whose earthly remains are layd in ye vaulted tomb before his Manx marble both of which were made for their peculiar repository by ye care pains and cost of ye said wina due defence ten years Elizabeth his good and only wife their only issue James in August 1687 married Elizabeth eldest daughter of Archibald Edmonstone Laird of Duntreath..."