Hyacinthe-Gabrielle Roland

The Right Honourable The Countess of Mornington
Portrait by Élisabeth Vigée Le Brun
Born	Hyacinthe-Gabrielle Roland c. 1766 Paris, France
Died	5 November 1816(1816-11-05) (aged 55–56) Teddesley Hall, Staffordshire, UK
Resting place	St Michael's Church, Penkridge, Staffordshire, UK
Other names	Hyacinthe-Gabrielle Fagan
Spouse	Richard Wellesley, 1st Marquess Wellesley ​ ​ (m. 1794)​
Children	Richard Wellesley Anne Wellesley Hyacinthe Mary Wellesley Gerald Wellesley Henry Wellesley

Hyacinthe-Gabrielle Wellesley, Countess of Mornington (née Roland or Rolland; c. 1766 – 5 November 1816) was a French actress who became the mistress, and later the wife, of Richard Wellesley, 1st Marquess Wellesley. As an actress, she was known as Gabrielle Fagan. Through her daughter, Anne, Roland was a great-great-great grandmother of Queen Elizabeth II.