Mary Elizabeth Horner (1808–1832)
Mary Elizabeth Lyell (1832–1873)
Eldest child and first daughter of Leonard Horner. Married Charles Lyell in Germany in 1832.
For more information see:
http://www.darwinproject.ac.uk/gender/2010/09/21/wives-of-naturalists/
Freeman 1978
ODNB s.v. Lyell, Charles