Who was born in 1850

Pioneering 19th-century Russian mathematician, writer, and physicist who was the first woman to earn a doctorate in mathematics and a full professorship in Europe

Bulgarian writer and poet, known as "the Patriarch of Bulgarian literature," whose works chronicled the Bulgarian Renaissance and Post-Liberation epochs, and who also served as Education Minister

French physiologist, immunologist, and parapsychologist who won the 1913 Nobel Prize for his discovery of anaphylaxis and coined the term 'ectoplasm'

Scottish novelist, poet, and essayist known for classic adventure stories and psychological thrillers, including *Treasure Island* and *Dr Jekyll and Mr Hyde*