The site became a haven for the family, and his grandson later expanded the estate.
The catholic nuns expanded the estate with a chapel, a hostel and service buildings.
Congressman Pearson also purchased additional properties and expanded the estate further.
He continued to expand and improve the estate until his death in 1777.
Irving finally purchased the property on June 7, 1835 for $1,800; he would later, through the years, add to the property to expand the estate.
David's son William continued to expand the estate and constructed glasshouses.
He further expanded the estate and gave it its current name, Château Fortia.
Sintra, therefore, continued to be a possession of the King, who expanded the local estate.
Balnagown was acquired by a stepson of Hugh in 1375 who expanded the estate, a process which continued over the following centuries.
He expanded the estate and developed a magnificent set of buildings in rococo style inspired by great European manor houses.