Among his committed supporters there were many Irishmen: D. Alejandro O'Reilly, the count of Mahony, the count of Lacy, Diego Purcell, Diego Nangle, Pedro Stuart, Ambrosio O'Higgins, Irish geologist and mining engineer in Spain William Bowles (1720–84), Bernardine Ward and Carlos McCarthy.
William A. Bowles (1799–1873), American doctor, soldier and Knights of the Golden Circle leader
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William Augustus Bowles (1763–1805), American adventurer and leader of a short-lived Native American state in southeastern North America
William Shakespeare | William Laud | William Blake | William | William III of England | William Morris | William McKinley | William Howard Taft | William Ewart Gladstone | William the Conqueror | William S. Burroughs | William Shatner | William Faulkner | William Randolph Hearst | William Wordsworth | William Tecumseh Sherman | William Hogarth | Prince William, Duke of Cambridge | William Penn | William Jennings Bryan | William Gibson | William Wilberforce | William James | William Makepeace Thackeray | Fort William | William Hanna | William Hague | William III | William Hurt | William Walton |
Besides the Brun source, there are other poems which are used within the work, including William Bowles's Coombe Ellen.