Wife of Nikolay Kashkin, born Yelizaveta Konstantinovna Kulneva (Елизавета Константиновна Кульнева); known after marriage as Yelizaveta Konstantinovna Kashkina (Елизавета Константиновна Кашкина).
In 1865 Yelizaveta Kulneva married the Russian musician, teacher and music critic Nikolay Kashkin (1846–1910), who was one of Tchaikovsky's closest friends.
Correspondence with Tchaikovsky
One letter from Tchaikovsky to Yelizaveta Kashkina has survived, dating from 1882, and has been translated into English on this website:
3 letters from Yelizaveta Kashkina, dating from 1881 to 1887, are preserved in the Klin House-Museum Archive.