Theo Vennemann

Theo Vennemann genannt Nierfeld (; born 27 May 1937 in Oberhausen-Sterkrade) is a German historical linguist known for his controversial theories of a "Vasconic" and an "Atlantic" stratum in European languages, published since the 1990s.

He was professor of Germanic and theoretical linguistics at Ludwig Maximilian University, Munich from 1974 (retired 2005). Provided by Wikipedia