Johanna Helena Herolt was an 18th-century painter from Germany.
Background
According to the RKD she was the eldest daughter of the painters Maria Sibylla Merian and Johann Andreas Graff, and learned to paint from them along with her sister Dorothea Maria Graff. Though she was born in Frankfurt, in 1670 the family moved to Nuremberg, where she was raised. In 1681 her mother returned to Frankfurt without her father, in order to live with her mother after her stepfather Jacob Marrel"s death.
Career
Johann Graff made various attempts at reconciliation but eventually returned to Germany. In 1691 the four women moved to Amsterdam, where they set up a studio painting flowers and botanical subjects, continuing Merian"s work on "The Caterpillar Book". Johanna married the merchant Jacob Hendrik Herolt, also an ex-Labadist, on 28 June 1692.
They had two children and Johanna began to take on her own commissions, working for Agnes Block and the Amsterdam Hortus like her mother.