The Bentinck family can be traced back to the 14th century in the east of the Netherlands. It was William Bentinck, 1st Earl of Portland who was the first member of the family to settle in the UK in the 17th century. From this point forward, its members served in the armed forces and as ambassadors and politicians including Governor General of India and Prime Minister of the United Kingdom. The family is also related to Queen Elizabeth, the Queen Mother through the Cavendish-Bentinck lineage.
The first mention of the family in the 2001 Roehampton Club Centenary Book by Elizabeth Hennessy appears at the very beginning during the foundation of the Club when Lord Charles Bentinck was highlighted as one of the original shareholders alongside Lord Montgomerie and the Earl of Shrewsbury. Lord Charles was also present at the first meeting at 12a George Street, Hanover Square in London W1 when the Club was formed. Lord Charles had recently returned from the Second Boer War as a Lieutenant in the 9th Lancers and was slightly wounded in the Siege of Mafeking.