 Witcop was a member of the anarchist Jubilee Street Club - her sister Milly (Witkop) was the partner of Rudolf Rocker - and it was there she met Guy Aldred.In January 1907 they set up home together in Thorpebank Road, Shepherd's Bush, London.Two years later, on 2 May 1909, she gave birth to their son, Annesley.