When you refer to people's parentage, you mean their parents and/or their parent's country and social class.

The novel starts when a child of unknown parentage is left at the house of the local priest. 小说是以一个双亲不明的孩子被遗弃在当地牧师的门前开始的。

She is of mixed Australian and Japanese parentage. 她既有澳大利亚血统又有日本血统。