[2] In 1718, he was nominated to the council of Fort St. George and served till 1725, when he resigned and returned to England.
[2] The most important event of Benyon's tenure was the invasion of the Marathas who invaded South India twice, once in late 1740 and the second time, in May 1741.
[3] During the second invasion, the Maratha army under Raghoji Bhonsle invaded Trichinopoly, where the Carnatic general Chanda Sahib had set up his stronghold, while another occupied Fort St David, Porto Novo and Sadras.
[3] The fortifications of Madras were strengthened and all British, Portuguese and Armenian citizens of the city were forcibly conscripted.
[4] After his return to England, Benyon lived at Gidea Hall in Essex and Englefield House in Berkshire and married his third wife, Mary Tyssen, daughter of Rachel De Beauvoir and Francis Tyssen of Hackney, and the widow of Powlett Wright.