Yeah - it's a six stone row. As you say, - there's one incorporated into the wall !. Another great setting and intervisible with the circle lower down the hill in a different field.....
(if intervisible is a real word) !
It gets a very brief mention in the Jack Roberts book - The stone circles of Cork and Kerry. "Reananeree/5sc/orientation 228/WSSS - the circle stands on the slope of a small hill less than 0.5m/1km north of Reananeree church"
The National Monument Survey has "CO069-026---- Stone circle - five-stone RÉ NA NDOIRÍ
Description: On low platform in rough pasture. Circle complete; orthostats are 0.6m to 1m L, 0.25m to 0.4m T and 0.3m to 0.9m H. Internal measurement along main axis, aligned NE-SW, is 2.4m. Stone row (CO069-027----) stands 120m to SSE. (O Nualláin 1984a, 37, no. 67)" for the circle and - "CO069-027---- Stone row RÉ NA NDOIRÍ
Description: In pasture, on W side of low hill. Row of six stones, crossed by field fence, aligned NE-SW, 7.2m in overall length. Stones decrease in height from SW to NE. NE stone is 0.3m L, 0.3m T and 0.2m H. Next stone, 0.25m to SW, is 0.7m L, 0.6m T and 0.9m H. Third stone, 0.5m from last, is 0.7m L, 0.25m T and 0.12m H. Fourth stone, 0.8m further to SW, is 0.6m L, 0.4m T and 1.2m H. Fifth stone, 0.9m from fourth, is 0.9m L, 0.3m T and 1.1m H. SW stone, 1.2m from last, is 0.65m L, 0.50m T and 1.5m H. Five-stone circle (CO069-026----) 120m to NNW. (O Nualláin 1988, 233, no. 220)" for the row