On October 16, 1893, Flora was married to Lord Terence John Temple Hamilton-Temple-Blackwood at the English Church of the Holy Trinity in the Avenue de l'Alma in Paris.
He was the second son of Frederick Hamilton-Temple-Blackwood, 1st Marquess of Dufferin and Ava and Hariot Hamilton-Temple-Blackwood, Marchioness of Dufferin and Ava.
His father was Governor General of Canada of in the 1870s and Viceroy and Governor-General of India in the 1880s and his mother was known for leading an initiative to improve medical care for women in British India.
They spent their honeymoon at Walmer Castle, which is one of Lord Dufferin's residences by virtue of his position as Lord Warden of the Cinque Ports.
During their marriage, Flora was "socially prominent in the American colony in London" and they were the parents of three daughters:
Lady Doris Gwendoline Hamilton-Temple-Blackwood (1895–1984), who married Captain Cecil Bernard Gunston, MC (1885–1934) of the Coldstream Guards, son of Major Bernard Gunston, formerly of the 5th Dragoon Guards, in 1922.

Lady Ursula Florence Hamilton-Temple-Blackwood (1899–1982), who married Arthur Swithin Newton Horne, formerly of The King's Own Royal Border Regiment and Government Secretary of the Federated Malay States.

Lady Patricia Ethel Hamilton-Temple-Blackwood (1902–1983), who married Henry Russell, the former director of the Boston Opera Company and the son of musician Henry Russell, in 1926.

During the Devonshire House Ball of 1897, then Lady Terence Blackwood, attended as Flora, Goddess of Flowers and was photographed by Walker & Boutall.
Her husband went as Captain Blackwood of the Royal Navy.

Upon the death of Terence's older brother Archibald, Earl of Ava at the Siege of Ladysmith in the Second Boer War in 1900, he became the heir and assumed the courtesy title Earl of Ava himself before succeeding his father in 1902.
Lord Dufferin died from pneumonia on 7 February 1918 and was buried at the Dufferin ancestral seat of Clandeboye, County Down.

In December 1919, nearly two years after Lord Dufferin's death, the Marchioness of Dufferin and Ava remarried to widower Richard George Penn Curzon, 4th Earl Howe, "one of the richest and most distinguished nobleman in England."
Lord Howe was a son of Richard Curzon-Howe, 3rd Earl Howe and the former Isabella Maria Katherine Anson (a daughter of Major-General The Hon.
George Anson).
 His first wife was Lady Georgiana Spencer-Churchill, the fifth daughter of John Spencer-Churchill, 7th Duke of Marlborough, and wife Lady Frances Vane.
From his first marriage, he had one son, Francis, who became the 5th Earl Howe upon Lord Howe's death in 1929.

Lady Howe died of heart disease following influenza and pneumonia at Penn House, Amersham, Buckinghamshire on 14 April 1925.
On October 16, 1893, Flora was married to Lord Terence John Temple Hamilton-Temple-Blackwood at the English Church of the Holy Trinity in the Avenue de l'Alma in Paris. He was the second son of Frederick Hamilton-Temple-Blackwood, 1st Marquess of Dufferin and Ava and Hariot Hamilton-Temple-Blackwood, Marchioness of Dufferin and Ava. His father was Governor General of Canada of in the 1870s and Viceroy and Governor-General of India in the 1880s and his mother was known for leading an initiative to improve medical care for women in British India. They spent their honeymoon at Walmer Castle, which is one of Lord Dufferin's residences by virtue of his position as Lord Warden of the Cinque Ports. During their marriage, Flora was "socially prominent in the American colony in London" and they were the parents of three daughters:
Lady Doris Gwendoline Hamilton-Temple-Blackwood (1895–1984), who married Captain Cecil Bernard Gunston, MC (1885–1934) of the Coldstream Guards, son of Major Bernard Gunston, formerly of the 5th Dragoon Guards, in 1922.
Lady Ursula Florence Hamilton-Temple-Blackwood (1899–1982), who married Arthur Swithin Newton Horne, formerly of The King's Own Royal Border Regiment and Government Secretary of the Federated Malay States.
Lady Patricia Ethel Hamilton-Temple-Blackwood (1902–1983), who married Henry Russell, the former director of the Boston Opera Company and the son of musician Henry Russell, in 1926.
During the Devonshire House Ball of 1897, then Lady Terence Blackwood, attended as Flora, Goddess of Flowers and was photographed by Walker & Boutall. Her husband went as Captain Blackwood of the Royal Navy.
Upon the death of Terence's older brother Archibald, Earl of Ava at the Siege of Ladysmith in the Second Boer War in 1900, he became the heir and assumed the courtesy title Earl of Ava himself before succeeding his father in 1902. Lord Dufferin died from pneumonia on 7 February 1918 and was buried at the Dufferin ancestral seat of Clandeboye, County Down.
In December 1919, nearly two years after Lord Dufferin's death, the Marchioness of Dufferin and Ava remarried to widower Richard George Penn Curzon, 4th Earl Howe, "one of the richest and most distinguished nobleman in England." Lord Howe was a son of Richard Curzon-Howe, 3rd Earl Howe and the former Isabella Maria Katherine Anson (a daughter of Major-General The Hon. George Anson).  His first wife was Lady Georgiana Spencer-Churchill, the fifth daughter of John Spencer-Churchill, 7th Duke of Marlborough, and wife Lady Frances Vane. From his first marriage, he had one son, Francis, who became the 5th Earl Howe upon Lord Howe's death in 1929.
Lady Howe died of heart disease following influenza and pneumonia at Penn House, Amersham, Buckinghamshire on 14 April 1925.
Flora Curzon, Lady Howe