There are 3 main access points for the summit

Nire valley carpark S27640 12815 A(269m), the track through Moanyarha bog that starts at S25500 17490 B(423m) and from the forest entrance at Glenpatrick near the scout hut at S28260 18720 C(226m).
From the Nire valley (large carpark but can fill quickly on weekends) follow the track up hill from the carpark entrance, through a small gate S28083 13003 D(382m), on to the Gap S30159 13359 E(466m) turn north west to summit Knockanaffrin passing above Coumduala Lough on a magnificent ridge.Continue north west to Knocksheegowna summit.

From Moanyarha bog follow the good track through the bog to S26635 17060 F, then cross boggy ground to the summit(note very wet area underfoot at times).

From Glenpatrick follow go past the scout hut on forest track turn
right at S28920 17447 G,right at S28941 17400 H, to Lough Mohra S28510 16150 I(468m).Climb on a track uphill to the col S28184 15948 J(624m) and walk north west to the summit.

Excellent place to view Waterford and Tipperary on a clear day, the trig pillar sits on a steep sloped, rock outcrop. Linkback: https://mountainviews.ie/summit/143/comment/4903/

Knocksheegowna as seen from Knockanaffrin. start at carpark S276 128 K and follow the track to the gap bearing 316 degrees and follow the ridge to Knocksheenagowna . OK route with little walker damage and an easy to follow track along the ridge - please note the track to follow on the way down is not as well defined as the one on the ridge Linkback: https://mountainviews.ie/summit/143/comment/1067/

Parking at S25486 17479 L, I approached from the northwest, using the track shown on Sheet 75 that skirts around Moanyarha to get a bit closer to the Knocksheegowna - Knockanaffrin ridge. If you were feeling a little lazy, the track is suitable for most cars, so you could get a bit closer. The downside of this accessibility is the disgraceful fly-tipping that has taken place, where people have dumped all manner of household waste just off the track itself.
Assuming you don't hang around unduly, it's only 45 mins from the parking space to the summit, with excellent views along the ridge and over to Lachtnafrankee. The summit area itself has two high points, with the slightly higher one being adorned with a trig pillar. Linkback: https://mountainviews.ie/summit/143/comment/3137/

Knocksheegowna (in the distance) seen from the cairn on the northwest shoulder of the ridge which is called Shauneenabreaga on the OS map. Linkback: https://mountainviews.ie/summit/143/comment/4665/

I fell in love with this part of the Comeraghs last year. It was easy to see why it was used as a location by Kubrick for "Barry Lyndon". Unfortunately the weather deteriorated once I actually got up into the hills, but I managed to get some nice shots from the start of my walk. Linkback: https://mountainviews.ie/summit/143/comment/5877/

Shauneenabreaga is a bump at the end of the ridge extending N from Knocksheegowna. The curious name probably comes from Ir. Seáinín Bréige, 'false flunkey'. It probably refers to the cairn and belongs to the same set of names as the various hills called Fear Bréige or Buachaill Bréige. They all allude to the fact that the cairn resembles a human figure when seen from a distance (sometimes it takes some imagination!). Linkback: https://mountainviews.ie/summit/143/comment/5878/