As far as I know Pearse was born in England and only qualified to play for Ireland under the granny rule. Same is true of Dev (born in New York). There'd be a case to be made for Sean Lemass (born 1899) but that depends on what you think 'deliver the land' might mean.

Sounds like more of the Celtic twilight BS that was going on around that time. Even the fact that he calls the country Eirinn (funny spelling) points to that.