Finnegan rhymes with:
flanagan, flannagan, kernigan, mcclenaghan, barragan, bernhagen, buddenhagen, collagen, ellenbogen, flanagan, flannagan, gilligan, gruenhagen, hashagen, horrigan, imogen, kernigan, levenhagen, mcclenaghan, mcgettigan, o'callaghan, ocallaghan, oregon, sahagun, steffenhagen, sternhagen, traphagen, verhagen
Finnegan sounds like:
fanchon, fangman, feminism, fincannon, fincham, finchum, finegan, finigan, finken, finnicum, finnigan, finucane