I've just got back from Donegal where I did some more research. "The Drumboe Martyrs" was writen by Michael McGinley (born in Breenagh, Ballybofey in 1852, year of death not traced, but in a book published in 1945 died "a few years ago in Ballybofey"). He also wrote "The Hills of Glenswilly". When the "Martyrs" were exhumed in 1924 he presided over the ceremony in Stranorlar. In County Derry I met an eighty year old man who remembers the Larkin family and was able to direct me to Sean's grave. There are two monuments , one at the execution site in Drumboe, the other, refurbished in 2000, on Stranorlar's main street. The executions are comemorated every year: some of the speakers have included, 1926 - Peadar O'Donnell, 1933 - Sean Russell, 1936 - Brian O'Higgins (author of countless rebel songs), 1939 - Madame MacBride, 1972 - Martin Meehan, 1976 - Daithi (David) O'Connell. To mark the 50th anniversary a new song "The Green Woods of Drumboe" was composed, "to an original air" by Eamonn Monaghan of Mountcharles, Donegal. (I have the words - 5 verses). Maybe this is the source of the confusion between the two songs "Martyrs" and "The Woods of Drumboe".