| Honorific Prefix: | The Right Honourable |
| The Lord Anslow | |
| Office: | Chairman of the |
| Term Start: | 1904 |
| Predecessor: | The Lord Cottesloe |
| Term End: | 1921 |
| Successor: | Sir Leonard West |
| Birth Name: | Tonman Mosley |
| Birth Date: | 16 January 1850 |
| Birth Place: | Burton upon Trent, Staffordshire, England |
| Death Place: | Iver, Buckinghamshire, England |
| Party: | Conservative |
| Parents: | Sir Tonman Mosley, Bt Catherine Wood |
Tonman Mosley, 1st Baron Anslow, (16 January 1850 – 20 August 1933), was a British Conservative politician, businessman and judge. He was chairman of the Buckinghamshire County Council from 1904 until 1921 and chairman of the North Staffordshire Railway company from 1904 until 1923.
Tonman Mosley was born at East Lodge, Anslow, Burton upon Trent, Staffordshire, and baptized at Rolleston-on-Dove, Staffordshire, the younger son of Sir Tonman Mosley, 3rd Baronet, of Ancoats, and his wife Catherine Wood (died 22 April 1891),[1] daughter of The Reverend John Wood of Swanwick Hall, Derbyshire, and Emily Susanna Bellairs, daughter of Abel Walford Bellairs.[2] [3] (See Mosley baronets for earlier history of the family.)
His elder brother Sir Oswald Mosley, 4th Baronet, of Ancoats, was the grandfather of fascist leader Sir Oswald Mosley, 6th Baronet. Mosley's family were prosperous landowners in Staffordshire.[4]
He was educated at Repton School, Repton, Derbyshire, between 1862 and 1868, and at Corpus Christi College, Oxford, between 1868 and 1871 and graduated from the University of Oxford in 1872 with a Bachelor of Arts degree. He was called to the Bar at Inner Temple in 1874 entitled to practice as a barrister-at-law.
Anslow unsuccessfully contested the Lichfield Division of Staffordshire as a Conservative in the 1885 general election. In 1897 he was appointed Chairman of the Quarter Sessions of Derbyshire, a post he held until 1902, and served as Chairman of the Buckinghamshire County Council from 1904 to 1921. Between 1904 and 1923 he was also Chairman of the North Staffordshire Railway Company. In 1914 Anslow contested the Wycombe Division of Buckinghamshire as a Liberal, but was once again unsuccessful. He also served as a Deputy Lieutenant of Buckinghamshire and Staffordshire.
He was appointed a Companion of the Order of the Bath in 1911 and on 28 June 1916 he was raised to the peerage as Baron Anslow, of Iver, in the County of Buckingham, in the Peerage of the United Kingdom. He was also a Knight of Grace of the Venerable Order of Saint John.
Lord Anslow married on 22 February 1881 at St Peter's Church, Eaton Square, Belgravia, London, Lady Hilda Rose Montgomerie, daughter of Archibald Montgomerie, 13th Earl of Eglinton, and his wife, Adela Caroline Harriett (née Capell), Countess of Eglinton, daughter of Arthur Capell, 6th Earl of Essex.[5] They had two sons and two daughters:
Both Lord Anslow's sons predeceased him. Lady Anslow died at Bangors, Iver, Buckinghamshire, on 18 June 1928. Lord Anslow survived her by five years and died in August 1933, aged 83, without surviving male issue, when the barony became extinct. His burial was a cremation at Woking, Surrey, on 24 August 1933.