Complex sentence: He was born at Bromhall, Fife, on 14 April 1814, and on 9 Feb.1842 was attached to Lord Ashburton's mission to Washington, returning to England with his lordship in September of that year.
Split into simpler sentences: He was born at Bromhall, Fife, on 14 April 1814. On 9 February 1842 he was attached to Lord Ashburton's mission to Washington, returning to England with his lordship in September of that year.