I am a descendent of Franz Herbert Doreck/ Lorenz Anton Doreck/ Frank Herbert Doreck. I have much interesting info on Roth's School for Girls in London, including a letter for Maggie Doreck describing life at the school + photos of Maggie Doreck, British census info, + wills. The house where they lived in Kensington Square Gardens is still standing. I would like to correspond with you. e-mail me at kevin.macdonald@ucl.ac.uk