Rosalia Zalkind was born on April 1, 1876, in Mogilev. She was born in the family of a successful Kyiv merchant Samuel Zalkind. Her father was one of the richest people in Kyiv, owned a beautiful and large tenement house and one of the largest haberdashery stores. Rosalia was the darling of the family, her parents did not look for souls, she did not know any hardships and deprivations. The family traveled regularly, and as a child, she managed to live in almost all countries in Europe. But, despite the atmosphere of a seemingly carefree childhood, Rosalia was a rather strange child.