The Celts: A History - Daithi O Hogain, Dáithí Ó hÓgáin - Google Books

https://books.google.de/books?id=-yd1huHoXJwC&pg=PA163&dq=%22Nitiobroges%22#v=onepage

The Celts were one of the most important population groups to spread across the ancient European continent. From 800BC to 1050AD their story is one of expanding power and influence followed by contraction and near extinction. Drawing on all possible…