Simplify the following text for a Grade 10 native English-speaking person.
Original: Born Abraham Gamse in Whitechapel , London on the day World War I began in 1914 , he was the son of Joseph Gamse , a Latvian photographer , and Sarah , a seamstress born on the border of Russia and Poland .
Simplified: He was born Abraham Gamse , he was the son of immigrants : a Latvian photographer and a Russo-Polish ( part Russian , part Polish ) seamstress .