The Rebbe's first cousin, a daughter of the Rebbe's father's brother, was Israeli poet Zelda Schneerson Mishkovsky. Known simply as Zelda, she won the Bialik Prize and was widely read – and loved. Born in Russia in 1912, she passed away in Jerusalem in 1984. She had made aliya with her mother in 1926. Marcia Falk has translated a her poems, and a bilingual edition has been published. The following poem is taken from that work (you can click on the image for a larger version):
Zelda remained Orthodox her entire life. Marcia Falk's book contains a brief biogrophy that should be of interest to many Chabadniks.
A special thank you to Schneur for his help on the genealogy of Zelda and it's link to the Rebbe.