Complex sentence: Although Rowling tends to make her characters based on clues from history, there was a man named Arthur Wellesley that lived from 1769-1852 and he was the first duke of Wellington.
Split into simpler sentences: Although Rowling tends to make her characters based on clues from history. There was a man named Arthur Wellesley that lived from 1769-1852 and he was the first duke of Wellington.