Loki Schmidt was born Hannelore Glaser. For over 30 years, she taught in elementary schools. She married Helmut Schmidt, who became the Chancellor of West Germany.
Later in life, Loki fought for the protection of endangered species. She founded the Nature Conservancy Foundation Hamburg for the Protection of Endangered Plants and began a public awareness campaign to save endangered wildflowers.
Loki died in 1982, and a botanical garden in Hamburg was named after her in 2012 (source).