Sean McMahon, in his "Rich and Rare" book, gives the following:

Thomas Maguire was an authentic balladeer, siging his own songs at fairs and in the street. D.J. O'Donoghue, the author of the great comprehensive bibliograp0hy of pre-1914 Irish Poets notes that he and his wife were charged with obstruction in London in October 1907, that they offered for sale pamphlets in the street. He had unfortunately, no further information about him."

Regards.