The chorus is based on two lines of his poem "my dear and only love": I serve thee in such noble ways, was never seen befor;
I crown and deck thee all with bays and love the evermore.
This was not the one written before his execution
see www.beepworld.de/members98/montrose/gedichte.htm for some of Montrose's poems, also the very good book "Cicil Warrior" by Robin Bell.
Ne oublie!
Chris