William Cowper-Temple, 1st Baron Mount Temple

William Francis Cowper-Temple, 1st Baron Mount Temple PC (13 December 1811 – 16 October 1888), known as William Cowper (pronounced "Cooper") before 1869 and as William Cowper-Temple between 1869 and 1880, was a British Liberal Party politician and statesman.

Background and education
Born at Brocket Hall, Hertfordshire, Cowper was the second son of Peter Cowper, 5th Earl Cowper, and the Hon. Emily Mary, daughter of Peniston Lamb, 1st Viscount Melbourne (since his mother had several lovers there is some doubt about hid true paternity). He was the younger brother of George Cowper, 6th Earl Cowper and nephew of Prime Minister Lord Melbourne. His father died in 1837 and in 1839 his mother married another Prime Minister, Lord Palmerston, who became Cowper's stepfather. He was educated at Eton. After entering the Royal Horse Guards in 1830, he was promoted Captain five years later, eventually attaining the rank of Major in 1852.

Political career
In 1835, Cowper was elected Liberal Member of Parliament for Hertford, a seat he held for the next thirty-three years, and became private secretary to his uncle Prime Minister Lord Melbourne. He was appointed a Groom in Waiting in 1837, and in 1841 served for three months as a Lord of the Treasury under Melbourne, only resuming office five years later as a Lord of the Admiralty when the Whigs returned to power under Lord John Russell. He again held this post under Lord Aberdeen from 1852 to 1855, and in the latter year was made Under-Secretary of State for the Home Department by his stepfather Lord Palmerston when he became Prime Minister. In August that same year he was appointed President of the Board of Health, and sworn of the Privy Council. Four years later he became Vice-President of the Board of Trade and Paymaster General, only serving for a year before Palmerston appointed him First Commissioner of Works.

In 1866, on the fall of Lord Russell's government, Cowper left office for good. Two years later he was returned to Parliament for Hampshire South, and held this seat until 1880. He was involved in the 1870 Education Act which set up Board Schools throughout England. He was responsible for the Cowper-Temple clause, an amendment to the Act that allowed parents to withdraw their children from Religious Education. The British rock band Cooper Temple Clause were named after the clause.

When his mother died in 1869, he inherited a number of estates under his stepfather's will, and so took that year under Royal licence the additional surname of Temple. The properties included a 10,000 acre estate on Sligo's Mullaghmore peninsula with its unfinished Classiebawn Castle, commissioned by his stepfather, which he completed by 1874. In 1880 he was raised to the peerage as Baron Mount Temple, of Mount Temple in the County of Sligo. This was a revival of the junior title held by the Viscounts Palmerston, which had become extinct along with the viscountcy on his stepfather's death in 1865.

Apart from his political career Lord Mount Temple organized ecumenical conferences at Broadlands. One of the regular speakers there was George MacDonald.

Personal life
Lord Mount Temple was twice married. He married firstly Harriet Alicia, daughter of Daniel Gurney, in 1843. After her early death the same year, he married secondly, in 1848, Georgiana Tollemache, daughter of Admiral John Richard Delap Tollemache, and a sister of the 1st Baron Tollemache. Both marriages were childless. He died in October 1888, aged 76, at his home of Broadlands, Hampshire, and was buried at nearby Romsey. His peerage became extinct on his death. Lady Mount Temple died in October 1901, aged 79.

His estates were inherited by his nephew, the Rt. Hon. Evelyn Ashley, the second son of Anthony Ashley-Cooper, 7th Earl of Shaftesbury.