I have recently transcribed the inscriptions for headstones in Kinawley Cemetery, Derrylin, Co. Fermanagh. There were several Latimer headstones and one, for the William Latimer family, specifically mentions Alexander Latimer who lived and died out in St. Croix. If you go to www.igp-web.com/IGPArchives
and click on Fermanagh and then Headstones, you will see a list of cemeteries. Choose kinawley.txt. It is in alphabetical order and the Latimer headstones comprise Nos. 90-99. No. 98 is the stone that references a William Latimer of Drumkellin, Born 1798 died 1876. And his son Alexander, Late o Saint Croix, Born December 1828 and died 1884 in St. Croix. Again, hope this might be of assistance to you as well.