Independent (1973–1975); Charles Towneley Strachey, 4th Baron O'Hagan (born 6 September 1945), is a British Conservative party politician.

The grandson of Maurice Towneley-O'Hagan, 3rd Baron O'Hagan, he inherited the family title at the age of 16 on his grandfather's death in 1961, his father, the Hon.

[5] The 5 June 1975 referendum on British EEC membership settled the question of Britain's position in Europe, and from that point onwards, the Labour party demanded its share of MEP nominations.

O'Hagan thus lost his seat on 3 July 1975 after a joint decision by the Conservative and Labour parties to cease appointing Independents and Liberals to the European Parliament.

"[10] Towards the end of his term of office, he suffered from ill health, and his overall attendance record slipped to the second-lowest of any British MEP, behind Ian Paisley.

[11] In 1999, in line with most other hereditary peers, he lost his right to sit in the House of Lords, although he had been on a leave of absence since the previous year, in the wake of declining health.

Previously, this ancient Lancastrian lordship had been thought lost or in the possession of the Crown having disappeared from the historical record in late nineteenth century.

[17][18][19] Lord O'Hagan has been married three times – firstly to the Georgian Princess Tamar Bagration-Imeretinsky (1967–1984), secondly to Mary Roose-Francis (1985–1995), and thirdly to Elizabeth Smith (1995–present).

[2] In 1975, he sold the papers of several of his Irish ancestors, including those of the 1st Baron O'Hagan, to the Public Record Office of Northern Ireland (PRONI).