I'm trying to find out when my husband's relative changed his name from Abraham Epstein to A Lincoln Epworth. He was born in New York ca 1903 and seems to have changed his name before 1930 probably because of antisemitism. As he was an attorney with offices at 1440 Broadway, New York so the name change was most likely official rather than by word of mouth but I can't be sure.
Beulah Gross (Australia). Researching Gross, Jacobs, Sloman in the UK, USA and South Africa