Henry Hare, 2nd Baron Coleraine
Henry Hare, 2nd Baron Coleraine( 1636–1708) was an English politician and antiquary.
Henry Hare, 3rd Baron Coleraine
Henry Hare, 3rd Baron Coleraine FRS; FSA( 10 May 1693 – 1 August 1749) was an English antiquary and politician who sat in the House of Commons from 1730 to 1734.
Hugh Hare, 1st Baron Coleraine
Hugh Hare, 1st Baron Coleraine( 1606 – 19 October 1667), was an English courtier.
George Wallace William Hanger
George Wallace William Hanger( March 28, 1866 – December 26, 1935) was a mediator for the Federal Board of Mediation and Conciliation and held other positions for government agencies involved in the resolution of labor disputes.
Wilhelm Grimmelmann
Hermann Johann Wilhelm Grimmelmann( January 15, 1893 – December 8, 1959) was a Danish gymnast who competed in the 1912 Summer Olympics.
He was part of the Danish team, which won the bronze medal in the gymnastics men's team, free system event in 1912.
George Hanger, 4th Baron Coleraine
George Hanger, 4th Baron Coleraine( 13 October 1751 – 31 March 1824) was a British soldier, author, and eccentric.
Vadim Vlasov
Vadim Nikolayevich Vlasov( born 19 December 1980) is a former Russian football player.
He is a younger brother of Dmitri Vlasov.
Miloš Zličić
Miloš Zličić( born 29 December 1999) is a Serbian football forward.
He is a younger brother of Lazar Zličić.
Richard Law, 1st Baron Coleraine
Richard Kidston Law, 1st Baron Coleraine,( 27 February 1901 – 15 November 1980) was a British Conservative politician.
William Hanger, 3rd Baron Coleraine
William Hanger, 3rd Baron Coleraine( 6 August 1744 – 11 December 1814), styled The Honourable William Hanger between 1762 and 1794, was a British politician.
Hanger was the second surviving son of Gabriel Hanger, 1st Baron Coleraine, by Elizabeth Bond, daughter and heiress of Richard Bond, of Hereford.
He sat as Member of Parliament for East Retford between 1775 and 1778, for Aldborough between 1778 and 1780 and for St Michael's between 1780 and 1784.
In 1794 he succeeded his elder brother John in the barony.
This was an Irish peerage and did not entitle him to a seat in the English House of Lords( although it did entitle him to a seat in the Irish House of Lords.
Lord Coleraine died in December 1814, aged 70, and was succeeded in the title by his younger brother, George.

Question: Who is younger, William Hanger, 3rd Baron Coleraine or Wilhelm Grimmelmann?
Answer: Wilhelm Grimmelmann