Sir Henri-Gustave Joly de Lotbinière, PC was born as Henry-Gustave Joly in Épernay, France. His father's family was one of the traditional Huguenot families from Switzerland and his mother's family was Roman Catholic. Initially a Huguenot himself, Henri-Gustave converted to Anglicanism before he married in 1856. His father, Gaspard-Pierre-Gustave Joly de Lotbinière, was a pioneer of early photography who made a series of daguerreotypes while on a Grand Tour through Greece, Egypt and the Holy Land. Henri-Gustave's mother was Julie-Christine, the youngest daughter of Michel-Eustache-Gaspard-Alain Chartier de Lotbinière, who inherited the seigneury of Lotbinière, in 1828. His parents' marriage was not a happy one, which is perhaps not surprising as his father had first proposed to Julie-Christine's eldest sister, Louise-Josephe, the Seigneuresse de Vaudreuil, who instead chose to marry Robert Unwin Harwood. Henri-Gustave Joly studied in Paris and inherited the title of seigneur of Lotbinière in 1860. He married Margaretta-Josepha Gowen, daughter of Hammond Gowen of Quebec, and was the father of eleven children. Their daughter married Brigadier-General Herbert Colborne Nanton, brother of Augustus Meredith Nanton. He was the grandfather of Seymour de Lotbiniere.
Joly de Lotbinière was once again elected to the federal House of Commons in the 1896 federal election, this time as the member from Portneuf. He served as a federal Cabinet minister from until he retired in. In Sir Henri was invited along with J. R. Booth, William Little, Thomas Southworth and Dr. William Saunders by Elihu Stewart, Canada's chief inspector of timber and forestry, to create the Canadian Forestry Association. On, these men met in the Railway Committee Room of the House of Commons in Ottawa, playing host to lumbermen, foresters, civil servants, railroad executives and others, all concerned about the survival and future use of Canada's forests. The CFA was truly a national organization, with representation from every province and the districts of Assiniboia, Athabaska, Keewatin and Yukon. Under the chairmanship of Sir Henri, delegates approved bylaws and a constitution of the Canadian Forestry Association, Canada's oldest conservation organization. These early conservationists recognized that the whole field of renewable resources, the forests, waters, wildlife, soils and recreational values, were closely interrelated. The CFA's mission continues to be to promote the protection and wise use of Canada's forest, water and wildlife resources. His participation as the first president of the Canadian Forestry Association was not altered by his ongoing political activity. He continued to put forward new ideas for forestry. In the CFA convened Canada's first national forestry convention, chaired by Sir Wilfrid Laurier, honorary CFA President. Sir Henri presented a paper in that called for the forest sector to consider conversion to the metric measurement system, a change that would not come to fruition in Canada until the s. At the annual meeting of the Canadian Forestry Association in Québec City, condolences were expressed to Sir Henri on the passing the previous year of his wife. To quote the proceedings: "Then we must all regret the affliction that has come to our honoured president, Sir Henri Joly de Lotbinière and his family in the death of Lady Joly. We all love Sir Henri, and we believe that his name will be remembered for the good work he has done as long as trees grow in this country. He has our sincere sympathy in the affliction that has befallen him." Prime Minister Laurier appointed him Lieutenant-Governor of British Columbia in 1900; he served until 1906. He died in Quebec City in 1908, and was buried in Mount Hermon Cemetery in Sillery, on. He and his wife, Margaretta Josepha Gowen, had 11 children of whom 7 reached adulthood. Seymour de Lotbiniere, who grew up in England and was an influential director of outside broadcastingat the BBC, was their grandson.