 As an identifiable neologism, "Germanic parent language" appears to have been first used by Frans Van Coetsem in 1994.It also makes appearances in the works of Elzbieta Adamczyk, Jonathan Slocum, and Winfred P. Lehmann.Several historical linguists have pointed towards the apparent material and social continuity connecting the cultures of the Nordic Bronze Age (1800 – 500 BC) and the pre-Roman Iron Age in Northern Europe (500 BC – 1 AD) as having implications in regard to the stability and later development of the Germanic language group.