The third Earl of Kilmarnock opposed
the Stuart claim to the English throne
during the rising of 1715 against George
I, Hanover (of German decent who
succeeded Queen Anne, daughter of James
II to the English throne).
The 4th Earl, William Boyd, fought for
Prince Charles Edward Stuart (the Young
Pretender) in an attempt to overthrow
George II, Hanover. Prince Charles
appointed him a member of the Privy
Council with the rank of general. The
fourth Earls capture at the Battle of
Culloden 16 April 1746, led to a trial at
the Tower of London, followed by his
beheading on Tower Hill on the 18th
John Walkinshaw Craufurd, 20th Laird
of Craufurdland Castle, only two miles
from Dean Castle, supported the house of
Hanover at that time. Craufurd though had
remained a friend of the Jacobite William
Boyd. He accompanied William Boyd to the
scaffold in London as an act of
comradeship. He received the earl’s
severed head, and arranged his
Although the Boyd titles were
confiscated at that time, the 4th Earl's
son James, was able to reclaim the estate
as he had fought on the Government
James sold Dean castle around that
time, with the castle having a number of
different owners over the following
James inherited the Earldom of Erroll
from his mother around that time, and
took the name Hay.
When the 22nd Earl of Erroll died
without a male heir in 1941, his daughter
became the Countess of Erroll and Chief
of Clan Hay, while her brother changed
his name back to Boyd, becomming 6th Lord
Kilmarnock and Chief of Clan Boyd.
Alastair Boyd, 7th Lord Kilmarnock
from 1975, died in 2009 aged 81. His heir
is the elder of his two sons, Simon John
Boyd, born in 1978, who has a son, Lucian
Michael Boyd born in 2007.
The last private owner of Dean Castle,
Howard De Walden, gifted the castle and
its contents to the people of Kilmarnock
in 1975. Dean has since served as a
Country Park with free entry. Dean
Castle Photo Tour.
Law Castle was restored in the 1990s
by an Englishman. The castle can now be
booked for self contained holidays,
weddings and corporate events. Website.
Portencross Castle has
recently been restored to serve as a
visitor attraction. There is a car park,
picnic area and scenic seaside walk close
to the castle.
Penkill Castle was sold by Evelyn May
Courtney Boyd in 1978 to an Elton A
Ecstrand from Michigan USA. The property
is now said to be owned by the famed
movie producer Patrick Drumgoole.
Trochrague House is now run by a
religious order that offers holidays to
people with special needs.
The Boyds', over the centuries, were
related through marriage to other
Ayrshire Clans such as the Campbells' of
Loudoun and Montgomerys' of Eglinton.
The Boyds' were known for local fueds
with the Montgomerys' of Eglinton west of
Kilmarnock, and Mures' of Rowallan north