John Carpenter, 4th Earl of Tyrconnell

John Delaval Carpenter, 4th Earl of Tyrconnell GCH, FRS (16 December 1790 – 25 June 1853) was a British peer. He served with the North York Corps of Yeomanry.

Background alt=A colour picture of an 1833 painting of Lady Tyrconnell sitting in a brown covered chair while in an 1830s dark blue full dress gown with puffy sleeves, reddish scarf and a dark feathered round hat. She is sitting in the carpeted Gothic style Drawing room next to a brown desk and light red drappered window. Carpenter was the second son of Charles & Elizabeth (MacKenzie) Carpenter. His father Charles (3 January 1757 – 5 September 1803) was a naval officer of rank who married on 19 May 1785 the only daughter of Thomas Mackenzie, Esq. His uncle was George Carpenter, 2nd Earl of Tyrconnell who died 15 April 1805, leaving the title to John's older brother George. When George died on 20 December 1812, John inherited the title.

He married on 1 October 1817 Sarah Crowe (abt 1795 – 1868), the only child of Robert Crowe, Esq., of Kiplin, county York and Anne Buckle, his wife, who was the daughter of Christopher Buckle, Esq., of Burgh, in Banstead.

In 1818, Sarah Crowe Carpenter inherited Kiplin Hall from her father and lived there until her death in 1868.

Coat of arms Lord Tyrconnell's arms, inherited by title from his great-great-great-grandfather Lord Carpenter, appear to be of French or Norman heritage, "Paly of six, argent and gules, on a chevron azure, 3 cross crosslets or." Crest, on a wreath a globe in a frame all or. Supporters, two horses, party-perfess, embattled argent and gules. Motto: "Per Acuta Belli" (Through the Asperities of War). These arms descend from John Carpenter, the younger (abt. 1372–1442), who was the noted Town Clerk of London during the reigns of King Henry V and King Henry VI.

These arms are often referred to as the Hereford Arms, named for the later ancestral home of the Carpenter Family in Hereford, England. The crest, supporters and motto apparently has changed several times over the centuries.

Sir William Boyd Carpenter (1841–1918), an English clergyman of the Established church of England, Bishop of Ripon, afterwards a Canon of Westminster and Chaplain to the reigning sovereign of England, wrote in a letter dated 7 August 1907 that his family bore the Hereford Arms. Sir Noel Paton, upon painting the family arms, informed him that the supporters were originally a round-handled sword, which in drawing over time became shortened, until nothing but the cross and globe were left beneath it. Those Hereford Arms were used by "John Carpenter, town clerk of London, who died 1442 A. D."