She wrote several works on Christian spirituality, and a biography of her husband,[1][2] British historian Lewis Bernstein Namier.
Iulia Michaelovna Kazarina was born in 1893 and brought up in Saint Petersburg, Russia.
Her first husband, Nicolai de Beausobre, a Russian diplomat reportedly persecuted by the Communist authorities, died in the 1930s.
She went on to publish a translation of Russian Letters of Direction by Macarius the Elder of Optino (1944), and a life of St Seraphim of Sarov, Flame in the Snow (1945), based on popular sources rather than the official hagiography.
After his death in 1960, she wrote his biography, for which she received the James Tait Black Award in 1971.