Count Miklós Bánffy de Losoncz was born 28 December 1801 in Târgu Mureș, Mureș County, Romania to Pál Bánffy de Losoncz (1762-1828) and Erzsébet Gányi de Felcsút (1767-1831) and died 17 December 1894 Budapest, Hungary of unspecified causes. He married Katalin Wesselényi de Hadad (1805-1885) 1 May 1824 in Cluj-Napoca, Cluj County, Romania. He married Katalin Bethlen de Iktár (1814-1871) 9 June 1840 in Cluj-Napoca, Cluj County, Romania.
Miklós Bánffy de Losoncz was főpohárnokmester and főispán of Alsó-Fehér County.
Children
| Name | Birth | Death | Joined with |
| Béla Bánffy de Losoncz (1831-1888) | 30 October 1831 Cluj-Napoca, Cluj County, Romania | 18 November 1888 Sânmihai de Pădure, Mureș County, Romania | Róza Wesselényi de Hadad (1835-1867) Róza Wesselényi de Hadad (1846-1926) |
| Name | Birth | Death | Joined with |
| Erzsébet Bánffy de Losoncz (1841-1913) | 12 April 1841 Cluj-Napoca, Cluj County, Romania | 14 January 1913 Vienna, Austria | Richard Berchtold von und zu Ungarschitz (1837-1906) |
| György Bánffy de Losoncz (1844-1929) | 12 June 1844 Cluj-Napoca, Cluj County, Romania | 15 November 1929 Bonțida, Cluj County, Romania | Irma Bánffy de Losoncz (1852-1875) |
Siblings