曾祖父 is the Chinese kinship term for paternal great-grandfather, i.e., paternal grandfather's father. Search the family tree for the paternal

姑母 is the Chinese kinship term for paternal aunt, i.e., father's sister. Search the family tree for the paternal aunt's son!

叔叔 is the Chinese kinship term for younger paternal uncle, i.e., father's younger brother. Search the family tree for the younger paternal u