Complex sentence: According to his published biographies, he is approximately 1/8 to 1/4 Native American on his paternal grandmother's side of the family; his paternal grandfather was Phillipino, and his mother was Jewish.
Split into simpler sentences: According to his published biographies, he is approximately 1/8 to 1/4 Native American on his paternal grandmother's side of the family. His paternal grandfather was Phillipino, and his mother was Jewish.