There's no photo on the Web, yet, but I have sourced two portrait photos
owned by the National Portrait Gallery in London. They are referenced at:
They are both photographs by Bassano, in a collection of his work that
is currently being catalogued.
The gallery adds new material to its website every two months, so
sooner or later the photos should turn up on the Web. It is possible
to purchase copies by contacting the Gallery and quoting the reference
numbers. An easy way into that part of the Gallery's site is to look
at the elegant portrait photograph of his wife, Lady Helen Magdalen
Gordon-Lennox, taken by Cecil Beaton, which is already on line at:
(She was Mistress of the Robes to Her Majesty Queen Elizabeth the Queen Mother.)
Details of how to order prints can be accessed from this page.
For your interest the gallery also holds portraits of the 10th and
11th Earls, and the 1st, 2nd, 3rd, 6th and 7th Dukes (all Percy's) as
well as an early Dudley from when that family held the title. There
are also the wives of the 3rd and 6th Dukes (the latter mistakenly
attributed to the 8th Earl, but look at the dates).
Several of the Dukes, including your man, served as Presidents of The
Royal Institution of Great Britain. See that organisation's website
It is possible that they might hold a photograph taken at some event
or conference. You can email Dr Frank James, Keeper of Collections at
Interestingly, the Robert Smith Surtees Society publishes a facsimile
of a ghost story called "The Shadow on the Moor", supposedly based on
a real ghostly hunt by the 8th Duke. Note that on the cover he is
referred to as :
Eighth Duke of Northumberland"
- the "Percy" , being the family name, is omitted.
There are also brief references to his stint as Honorary Colonel of
the Tyne Electrical Engineers (Royal Engineers) at:
and his marriage into another ducal Family (his wife was a sister of
the 8th Duke of Richmond, Lennox & Gordon, at:
Another genealogy link to Lady Helen, with live links to details of
other members of her family, including their children, is at:
Other small items of interest are:
He co-wrote (with Maj Gen Sir Ernest (Dunlop) Swinton (1868-1951)) :
"A year ago: eyewitness's narrative of the war from March 30th to July
18th, 1915" [published 1916]. See:
a reference to his involvement with "The Patriot" and the "hidden
hand" Jewish conspiracy theory can be found in Thomas Linehan's
article " ' A Dangerous Piece of Celluloid" - British Fascists and the
Hollywood Movie" at:
He seems to have been very much a man of his times.
Thank you for an interesting question.
Search terms (on various search engines):
Alan Ian Percy (1880-1930), the 8th Duke of Northumberland
"Alan Ian Percy" 8th Duke of Northumberland
Helen Magdalen Gordon-Lennox