Biography of Winifred Anna Cavendish-Bentinck, Duchess of Portland (1863-1954)
- [Hans] William Bentinck, 1st Earl of Portland (1649-1709)
- [William] Henry Bentinck, 1st Duke of Portland (1682-1726)
- William Bentinck, 2nd Duke of Portland (1709-1762)
- Margaret Cavendish-Bentinck, Duchess of Portland (1715-1785)
- John Albert Bentinck (1737-1775; naval captain and M.P.)
- William Henry Cavendish Cavendish-Bentinck, 3rd Duke of Portland (1738-1809)
- William Henry Cavendish-Scott-Bentinck, 4th Duke of Portland (1768-1854)
- Lord William Henry Cavendish-Bentinck (1774-1839; M.P. and Governor General of India)
- William John Cavendish-Bentinck-Scott, 5th Duke of Portland (1800-1879)
- Lord [William] George Frederic Cavendish-Scott-Bentinck (1802-1848)
- Lord [William] Henry Cavendish-Bentinck (1804-1870)
- William John Arthur Charles James Cavendish-Bentinck, 6th Duke of Portland (1857-1943)
- Winifred Anna Cavendish-Bentinck, Duchess of Portland (1863-1954)
- William Arthur Henry Cavendish-Bentinck, 7th Duke of Portland (1893-1977)
- Ferdinand William Cavendish-Bentinck, 8th Duke of Portland (1888-1980)
- Victor Frederick William Cavendish-Bentinck, 9th Duke of Portland (1897-1990)
- Henry Noel Bentinck, 11th Earl of Portland (1919-1997)
- Timothy Charles Robert Noel Bentinck, 12th Earl of Portland (b 1953)
Winifred, daughter to Thomas Yorke Dallas-Yorke, was born at Murthly Castle, Perthshire. Following her marriage to the 6th Duke of Portland, she became a prominent society figure. She also moved in court circles - Queen Victoria stood sponsor in person for her daughter, and the duchess served as Mistress of the Robes to Queen Alexandra from 1913-1925.
The duchess had a strong interest in the welfare of birds, and in 1891 became the first, and longest-serving, president of the Society for the Protection of Birds - a position which she held until her death and in which she helped the society obtain its royal charter. She was also active on behalf of the Royal Society for the Prevention of Cruelty to Animals, serving as vice-president and president of the ladies' committee.
Winifred was also interested in improving social conditions. In the year of her marriage, the Duke of Portland won a large amount of horseracing prize money. The duchess persuaded him to use the greater part of this in building the Welbeck Almshouses. She actively supported the local mining community, paying for medical treatments for miners and organising cookery and sewing classes for their daughters. Indeed, the Nottinghamshire Miners' Welfare Association petitioned the king to have an honour bestowed on her on account of her work, and so in 1935 she was made a Dame of the British Empire.
In 1889 she married William John Arthur James Cavendish-Bentinck, 6th Duke of Portland and had:
- William Arthur Henry (1893-1977), later 7th Duke of Portland
- Francis Morven Dallas (d 1950) died unmarried
- Victoria Alexandrina Violet (b 1890) m Captain Michael J.E. Wemyss in 1918
- There are apparently no biographies dedicated to the duchess.