Arthur Charles Valerian Wellesley, 9th Duke of Wellington, (born 19 August 1945) is a British aristocrat and politician. He has served as Conservative Party Member of the European Parliament (1984–1989) for Surrey West and currently sits as a hereditary peer in the House of Lords since 2015.
Hereditary peer leader is a job taken by Arthur Charles Valerian
It states that Arthur currently sits as hereditary peer in the House of Lords (since 2015). The job, Hereditary Peer Leader, is not the same position and might not even exist. I suppose it was difficult for the system because it couldn't tell if it was true or not. It has a hint of truth, but it's hard to tell the difference in positions.