The 5th Earl Fitzwilliam, known as William Fitzwilliam, was a prominent British nobleman born in 1786. He inherited the title from his father in 1833 and was known for his significant contributions to the Whig Party and his involvement in local politics. He served as a Member of Parliament and was an advocate for social reform during his lifetime. Fitzwilliam was also a notable landowner, managing the vast estates of Wentworth Woodhouse in Yorkshire. He was recognized for his philanthropic efforts, supporting various charitable causes and improving the lives of his tenants. He passed away in 1856, leaving a lasting legacy in British history.