Lydia Koidula, Estonian poet and playwright (born 1843)

Lydia Emilie Florentine Jannsen, known by her pen name Koidula, was an Estonian poet. Her sobriquet means '(Lydia of) The Dawn' in Estonian. It was given to her by the writer Carl Robert Jakobson. She is also frequently referred to as Koidulaulik – 'Singer of the Dawn'.