Complex sentence: Douglas was born in Macon, Georgia, the son of Lena Priscilla (née Shackelford) and Edouard Gregory Hesselberg, a concert pianist and composer, a German-Jewish immigrant from Riga, Latvia, then part of Russia.
Split into simpler sentences: Douglas was born in Macon, Georgia, the son of Lena Priscilla (née Shackelford) and Edouard Gregory Hesselberg, a concert pianist and composer. His father was a Jewish immigrant from Riga, Latvia, then part of Russia.