Richard Bagwell, Dictionary of National Biography… (1893)
“ Having first sworn him to secrecy, the tempter reminded Maguire that he was 'overwhelmed in debt,' that rebellion alone gave him a chance of regaining his ancestral estates, and that there was no other chance of maintaining their religion against the oppression intended by the English parliament. Being married to a lady of the Pale, Maguire was valued as much for his influence among her connections as for his own importance in Ulster. ”
