Sentence:  For more than forty years, he preached the creed of art and beauty. He was heir to the ancient wisdom of Israel, a <WSD>child</WSD> of Germany, a subject of Great Britain, later an American citizen, but in truth a citizen of the world. 
Meaning of the word marked with <WSD> tags:  A person considered a product of a place or culture, a member of a tribe or culture, regardless of age.