Sir Melvill Beachcroft
(Richard) Melvill Beachcroft Born 1846, died 1926, married Charlotte Bonnor-Maurice. Knighted (Sir Melvill) 1904. Solicitor from 1868.
Deputy Chairman of the London County Council 1896-1897, Vice Chairman LCC 1897-1898, Chairman LCC 1909-1910. Chairman Metropolitan Water Board.
Some details of his archives here and here
Wikipedia page [1]