Greenore in Greenore, Co. Louth
I'm playing it at the moment, played it for the first time last year. It's at the end of the road, next stop is the docks at Greenore Port. Golf has been played there since 1896, it's fun to play, plenty of interesting shots, holes to note include 6, 7, 14. 6 is a downhill 125 yard par 3 over a pond, 7 is a par 4 which might be better played with an iron first and then a wood second shot and 14 is a par 3 around 145 called pigs back played from one pigs back to another.
The club isn't too far from either Baltray or Royal County Down, around 45 minutes. I think anyone would be very pleasantly suprised playing Greenore as a side when playing either of it's two more storied neighbours.