The mother of Arthur Capell 2nd Baron Capell, created Earl of Essex in 1661.
She was the widowed wife of Arthur Capell, 1st Baron of Hadham.
A Civil War royalist officer he had been captured after the Seige of Colchester, and executed by order of Parliament).
Their lands had been sequestrated by Parliament.
Lady Elizabeth Capel successfully petitioned Parliament for return of her family lands 7-8th May 1649 (see Pariamentary record on our "Elizabeth Morrison's petition" page.
Her lands (including Cassiobury) seem to have been returned to her on the grounds that they were hers by right of inheritance from her father, )Sir Charles Morrison.
She is asserted to have been the first woman Architect, and the designer of Little Cassiobury House by Architectural Historian, John Miller.
A father condemned as a leading Royalist soldier and his son condemned as a plotter against king the Protestant Charles II and his brother James, who was to become England's last Roman Catholic monarch to reign over the three kingdoms (England, Ireland,& Scotland (Wales is a Principality - Incorporated int England under "Laws in Wales Acts 1535 and 1542" by Henry V111)). In 1683 he was crowned James II of England & Ireland, and James VII of Scotland. His reign ended with the "Glorious Revolution" (1688).
The backdrop to the commisioning, and building of Little Cassiobury was the Civil War, Regicide, Parliamentary Comonwealth, Restoration, and the "Exclusion Crisis".
Its not clear which Arthur commisioned Little Cassiobury or for whom. Whose widow was its first resident is not clear either.