John Saumarez, 3rd Baron de Saumarez

James Saumarez (who married Mary Lechmere, daughter of Vice-Admiral William Lechmere), and Thomas Le Marchant Saumarez (who married Catherine Spencer Alicia Beresford Vassall, daughter of Lt.-Col. Spencer Thomas Vassall).

Upon the death of his elder brother, clergyman James on 9 April 1863, he succeeded as the 3rd Baron de Saumarez, in the Island of Guernsey in the Peerage of the United Kingdom, as well as the 3rd Baronet Saumarez, in the Island of Guernsey in the Baronetage of the United Kingdom.

[2] In 1869, after Lord de Saumarez put his Guernsey property up for sale, his eldest son, James exercised his droit de retraite (right of redemption) to buy Saumarez Park and the Le Guet estate at Castel there.

Together, they were the parents of another two sons and two daughters:[6] Lord Saumarez died on 8 January 1881, at age 74, and was buried at Brompton Cemetery in London.

[6] Through his daughter Augusta, he was a grandfather of the scientist and Conservative politician, George Irby, 6th Baron Boston (1860–1941).