Thank you so much for your answer. By now all what I know is that Dimitri Lubomirsky came here in 1920. His parents names were: Nicolai Alexandrovich Lubomirsky (who died in
1918) and Lidia Rodionova Novicov (died in 1916). Their son, Dimitri, was born on January 25, 1887 in Uglich, Iaroslav, Russia. They had five more children: Nicolai Lubomirsky (born in 1883), Maria Lubomirsky (born in 1885), Victor Lubomirsky (born in 1895), Alexandra Lubomirsky born in 1897) and Olga Lubomirsky (born in 1898). They were Orthodox.
Thank you once more for your time and help,