Foreword
It is only as prehistoric archæology has come to throw more and more light on the early civilisations of Celtic lands that it has become possible to interpret Celtic religion from a thoroughly modern viewpoint. The author cordially acknowledges his indebtedness to numerous writers on this subject, but his researches into some portions of the field especially have suggested to him the possibility of giving a new presentation to certain facts and groups of facts, which the existing evidence disclosed. It is to be hoped that a new interest in the religion of the Celts may thereby be aroused.

About the Author
"Sir Edward Anwyl (August 5, 1866 – August 8, 1914) was a Welsh academic, specializing in the Celtic languages.

Anwyl was born in Chester, England, and educated at the King's School, Chester. He went on to study at Oriel College, Oxford, and Mansfield College, Oxford. In 1892 he became Professor of Welsh at the University of Wales, Aberystwyth, and was later appointed Professor of Comparative Philology. He was knighted in July 1911. In 1913, he became Principal of the newly-founded. Monmouthshire Training College at Caerleon." -- Wikipedia