Complex sentence: Anna of Nassau-Dillenburg (1441-1514) was a Flemish-German philanthropist, she was the eldest daughter of Johann IV, count of Nassau-Dillenburg and his wife Maria, the daughter of Johann II, count von Loon-Heinsberg.
Split into simpler sentences: Anna of Nassau-Dillenburg (1441-1514) was a Flemish-German philanthropist. Anna was the eldest daughter of Johann IV, count of Nassau-Dillenburg and his wife Maria, the daughter of Johann II, count von Loon-Heinsberg.