oboe at the Guildhall School of Music and Drama , and her best-known student was George Martin ; in 2011 , just before her death at age 97 , she appeared in the documentary film Produced by George Martin .
In 1912 the Ehrenfests moved to Leiden where her father succeeded H.A . Lorentz as professoreducation.educationthe University of Leiden .
In 1912 they moved to Leiden , where Paul Ehrenfest was appointed to succeed H.A . Lorentz as professoreducation.educationthe University of Leiden .