The song "Grace" is about Grace Gifford and Joseph Mary Plunkett, executed for his party in the Rising of 1916. The last line of the third verse is taken from a poem written by Plunkett. I stumbled across the poem in a recently acquired re-publication of a 50-year old anthology. Here it is for those interested.

I SEE HIS BLOOD UPON THE ROSE Joseph Mary Plunkett (1887-1916)

I see his blood upon the rose
And in the stars the glory of his eyes,
His body gleams amonh eternal snows,
His tears fall from the skies.

I see his face in every flower;
The thunder and the singing of the birds
Are but his voice- and carven by his power
Rocks are his written words.

All pathways by his feet are worn,
HIs strong heart stirs the ever-beating sea,
His crown of thorns is twined with every thorn,
His cross is every tree.