Sir John Simeon, 1st Baronet (1756 – 4 February 1824) of Walliscot in Oxfordshire was Member of Parliament (MP) for Reading in Berkshire from 1797 to 1802 and from 1806 to 1818. He also practised as barrister and a member of Lincoln's Inn, and held the offices of Recorder of Reading 1779-1807 and Master in Chancery from 1795 until 1808 when he became Senior Master, and was created 1st Baronet Simeon in 1815.^[1]

Simeon was the second eldest son of Richard Simeon (died 1784) and Elizabeth Hutton.^[2] His elder brother, named Richard after their father, died early. The third brother, Edward Simeon, was a director of the Bank of England.^[3] His youngest brother, Charles Simeon, became a prominent evangelical clergyman.^[3][4]

John Simeon married Rebecca Cornwall, daughter of John Cornwall of Hendon House in Middlesex, in 1783. They had a number of children:

• Richard Godin Simeon (21 May 1784 – 11 January 1855) married Louisa Edith Barrington (1790–1847) on 8 April 1813, producing three sons and two daughters^[5]
• Harriet Simeon (died 15 November 1845) married Sir Frederick Francis Baker, 2nd Baronet in July 1814, producing 1 daughter and 3 sons.
• Edward Simeon (1788 - 16 October 1851) on 3 September 1814 married Sophia Charlotte Lybbe-Powys of Hardwick House (2 July 1796 – 23 February 1833)
• Charlotte Simeon (died 1845)
• Eleanora Simeon
• Charles Simeon

Coat of arms of Sir John Simeon, 1st Baronet

Crest A fox passant-reguardant Proper in the mouth a trefoil slipped Vert. Escutcheon Per fess Sable and Or a pale counterchanged in chief an ermine spot of the first between two trefoils slipped of the second and in base a like trefoil between two like ermine spots. Supporters Dexter a fox reguardant Proper in the mouth a trefoil slipped Vert, sinister a lion Gules ducally crowned Or. Motto Serviendo; Nec Temere Nec Timide [6]

• Simeon, Charles (1847). Carus, Rev. William (ed.). Memoirs of the Life of the Rev. Charles Simeon. London: Hatchard and Son. Retrieved 31 May 2013.