Swami Sivananda Radha, born Sylvia Hellman was a German yogini who emigrated to Canada and founded Yasodhara Ashram in British Columbia. She established a Western-based lineage in the Sivananda tradition and published books on several branches of Yoga.
I've practiced the Divine Light Invocation for many years now. It is a powerful way to heal yourself and all beings while blessing all that is. The practice leaves you filled with a deep peace.