Mallory was born in Mobberly , Cheshire , the son of Herbert Leigh Mallory ( 1846 - 1943 ) , a clergyman who changed his name to Leigh-Mallory in 1914 . Mallory was born in Mobberley , Cheshire , the son of Herbert Leigh Mallory ( 1856 â `` 1943 ) , a clergyman who changed his surname to Leigh-Mallory in 1914 .