In the Landau Residence Privilege of 1427, which she obtained for her son and his wife and children, her name is clearly stated to have been Vergentlin, and not, as frequently assumed, Miriam. Vergentlin is the vernacular

equivalent for the Hebrew name Chana.

[Dr. Jacobi, "The Historicity of the RaSHI Descent", Avotaynu Vol VI No1 p25]