Hugh Blaker (1873–1936) was an English artist, collector, connoisseur, dealer in Old Masters, museum curator, writer on art, and a supporter and promoter of modern British and French painters.

Following Robert's death, Jane married John Richard Eyre in the Church of the Sacred Heart, Teddington on 27 August 1898.

[1] Blaker's collection of essays on social problems of the day, Points for Posterity (1910), paints a detailed portrait of its author: a free thinker, open minded, opinionated, cynical, reactionary, critical, and a socialist.

[4] As well as his activities as dealer and advisor to the Davies sisters, Hugh Blaker assembled an important collection of art that he kept in his home at 53, 55 & 57 Church Street, Old Isleworth.

When Hartnell married, he and his wife continued to live in one of Blaker's adjacent properties at Isleworth; their first child, Heather, was born there in 1929.

"Shortly before World War I, Hugh Blaker discovered a painting of the Mona Lisa in the home of a Somerset nobleman in whose family it had been for nearly 100 years.

According to Encyclopedia Americana[8] and The New York Times,[9] The Isleworth Mona Lisa has been attributed to Leonardo, and is thought to be the unfinished portrait from which Raphael made his famous sketch (which is in the Louvre museum); art historian Paul George Konody wrote of the painting that it "in no sense of the word a 'copy,' but varies in some very important points from the Paris 'Mona Lisa'".