Yes, the Pogues sing about this in "Young Ned of the Hill." The song's actually about a rapparee in a later period, but the lyrics refer to Cromwell himself as "To hell or Connaught," thus:
A curse upon you, Oliver Cromwell, You who raped our motherland I hope you're rotting down in hell For the horrors that you sent To our misfortunate forefathers, Whom you robbed of their birthright 'To hell or Connaught,' May you burn in hell tonight
A revolt against English efforts to impose Protestantism, and their institutions of governance, throughout the entire island was brutally suppressed by Oliver Cromwell in 1641. Irish chieftains who had participated in the rebellion had their land confiscated and were banished to the poor land west of the river Shannon, on pain of death. Or, as Cromwell put it so succinctly, they could go 'to hell or to Connacht'.