Lady Cassandra Beaumont, The Duchess of Chelsea

The Lady Cassandra Beaumont, The Duchess of Chelsea is the wife of the current 4th Duke of Chelsea, Sir Richard Beaumont. She holds the secondary title, as the wife of the Duke, The Countess of Conisbrough.

Life
Cassandra is the eldest daughter and child of Sir Alexander Mortimer, The 7th Duke of Dorchester and Alice Mortimer, The Duchess of Dorchester. Through her father she is a descendant of King George I of Wessex, her grandmother being his youngest granddaughter. She has three younger siblings, all of which married peers or became a peer by right: The Lady Arabella Somerset, The Duchess of Beverly, The Lady Maria Lascelles, The Countess of Medford, and Sir Roger Mortimer, The Duke of Dorchester.

Cassandra married Sir Richard Beaumont the son of Sir Edmund Beaumont, The 3rd Duke of Chelsea and at the time the Earl Marshal of Wessex. Together the couple had four children to survive to adulthood: Sir Richard Beaumont, The Lady Anne Beaumont, The Lady Annebella Beaumont, and The Lady Annebeth Beaumont.

Cassandra became a close friend of Queen Eleanor of Wessex.

On the death of her brother, Sir Roger Mortimer, The 9th Duke of Dorchester, part of the Mortimer family estate passed to her son Sir Richard Beaumont, The 5th Duke of Chelsea.