THE HISTORY OF THE CELTIC LANGUAGE; WHEREIN IT IS SHOWN TO BE BASED UPON NATURAL PRINCIPLES, AND ELEMENTARILY CONSIDERED, CONTEMPORANEOUS WITH THE INFANCY OF THE HUMAN FAMILY LACHLAN MACLEAN 1840
A CRITICAL HISTORY OF THE CELTIC RELIGIONS AND LEARNING: CONTAINING AN ACCOUNT OF THE DRUIDS ; OR, THE PRIESTS AND JUDGES, OF THE VAIDS, OR THE DIVINERS AND PHYSICIANS; AND OF THE BARDS, OR THE POETS AND HERALDS ; OF THE ANCIENT GAULS, BRITONS, IRISH AND SCOTS JOHN TOLAND 1814
OGYGIA: OR, A CHRONOLOGICAL ACCOUNT OF IRISH EVENTS: COLLECTED FROM VERY ANCIENT DOCUMENTS, FAITHFULLY COMPARED WITH EACH OTHER, AND SUPPORTED RODERIC O’FLAHERTY 1793
DISCOVERY OF AMERICA BY THE IRISH PREVIOUS TO THE NINTH CENTURY WITH ACCOUNTS BY SCANDINAVIANS AND GERMANS TIMOTHY L. MURPHY 1889
GODS AND FIGHTING MEN: THE STORY OF THE TUATHA DE DANAAN AND OF THE FIANNA OF IRELAND AUGUSTA GREGORY 1904
