On 25 January 1830, he married Fanny Elizabeth Hopkins-Northey (d. 1860), daughter of William Richard Hopkins-Northey and Anne Elizabeth Fortescue. Before her death in 1860, they were the parents of: •
Florance George Henry Irby, 5th Baron Boston (1837–1877), who married Hon. Augusta Caroline Saumarez, second daughter of
John Saumarez, 3rd Baron de Saumarez and Caroline Esther Rhodes, in 1859. On 20 July 1861 at
St George's, Hanover Square, he married his son's sister-in-law, Hon. Caroline
Amelia Saumarez, eldest daughter of
John Saumarez, 3rd Baron de Saumarez and, his first wife, Caroline Esther Rhodes (daughter of William Rhodes of Kirskill Hall,
Yorkshire, and
Bramhope Hall, Yorkshire). Together, they were the parents of: ==References==