1980s- Angeles Arrien
reviving ancient ritual traditions - http://marilynschlitz.com/a-tribute-to-angeles-arrien/
She was the founder and president of the Angeles Arrien Foundation for Cross-Cultural Education and Research, which focuses on the preservation of indigenous wisdoms, environmental sustainability, multi-cultural bridging and effective intergenerational leadership demonstrated by both elders and youth.
http://www.spiritualityandpractice.com/teachers/teachers.php?id=291