[1] Tregwynt is one of the oldest house sites in the north of Pembrokeshire, with records dating to the 14th century.

[2] The 1844 Topographical Dictionary of Wales says of Granston, the parish that contains Tregwynt, "It is intersected by the turnpike-road leading from Fishguard to St. David's, and is watered by a small stream, which, after flowing through it, falls into the sea near Aberbâch.

The surrounding scenery is not distinguished by any peculiarity of feature, though from the higher grounds some good views are obtained over the [St. George's] Channel and the adjacent country.

[6] The six-window east entrance front with narrow sashes dates to the earlier part of the 18th century.

He was the ancestor of the Heathfield branch of the family, headed in 1894 by George James Harries, resident at Priskilly.

[8] During the English Civil War (1642–51), a hoard of coins was buried in a redware pot in an outbuilding of the mansion.

[10] Possibly it was buried by a member of the Harries family in 1648 who was involved in the local conflicts of the Second Civil War.

[13] Colonel Knox, who commanded the local militia, was a guest at a ball at Tregwynt that day when the event was interrupted by a messenger from the fort at Fishguard that the French had landed an invasion force.

He left at once for the fort where his men were preparing to engage the enemy, but as the light was failing he decided to wait until the next day when John Campbell, 1st Baron Cawdor, would arrive with reinforcements from Haverfordwest.

It includes coins minted for Edward VI, Philip and Mary, Elizabeth I, James I, Charles I and the government of the Commonwealth of England.