Original: In the late 1990s, members of IMBAS, a Celtic Reconstructionist organization based in Seattle, began promoting the name Senistrognata, which they say means "the ancestral customs of the Celtic peoples" in reconstructed Old Celtic.
Simplified: In the late 1990's, members of Imbas, a Celtic Reconstructionist group in Seattle, began promoting the name Senistrognata, which they say means "the ancestral customs of the Celtic peoples" in reconstructed Old Celtic.