I learned this from pianist and composer the late Mícheá Ó Súilleabháin who often accompanied me when we did gigs together in the Twin Cities. He told me he took it from O’Sullivan’s book of O’Carolan’s compositions #193. He said it’s also known as ‘The Dew on the Grass’.

 E2 G | A2 AB cd BA | GB de dB GB | A2 AB ce dc |
 B2 AG B2 EG | A2 AB cdBc | Aaag a2 ga | ba ga ea ed |
 B2 AG A3 E || A2 AB cd BA | GB de dB GB | A/B/A AB cedc |
 B2 AG B2 EG | A2 AB cd Bc | Aa ag a2 ga | ba ga ea ed |
 B2 (3A/B/A/G A3 e || gega gega | ge ga ge g/e/d | ea ag a2 ag |
 ag ab ag ed | ef ge ga ba | gega b4 | ag af ge ba |
 ge d=f ed Bc | AB cd ea ed | B2 (3A/B/A/G A3 e || ge ga ge ga |
 ge ga ge g/e/d | ea ag a2 ag | ag ab ag ed | ef ge gaba |
 ge ga b4 | abaf geba | ge d=f ed Bc | AB cd ea ed |
 B2 (3A/B/A/G{/B} A4 |