| | Surname | Forename | Year Born | Location | Census Year | | Mallison | William | abt 1796 | Kirkby Malhamdale | 1841 |
| Mallison | William | abt 1827 | Kirkby Malhamdale | 1841 |
| Mallison | William | abt 1795 | Malham Moor | 1851 |
| Maltby | Jane | abt 1863 | Pannal | 1891 |
| Manby | Margaret | abt 1831 | Skipton | 1871 |
| Manby | Margret | abt 1831 | Skipton | 1881 |
| Mand | Hannah | abt 1844 | Bingley | 1901 |
| Mandevile | Sarah | abt 1815 | St Paul | 1851 |
| Mangham | Joseph | abt 1820 | Twiston | 1881 |
| Mangham | Joseph | abt 1820 | Twiston | 1861 |
| Mangham | Joseph | abt 1820 | Twiston | 1871 |
| Mangham | Thomas | abt 1822 | Goldshaw Booth | 1871 |
| Mangham | Thomas | abt 1822 | Settle | 1851 |
| Mangham | Thos. | abt 1822 | Twiston | 1881 |
| Mann | Laura | abt 1881 | Shipley | 1891 |
| Mansfield | Ann | abt 1823 | Kirkby Malhamdale | 1841 |
| Mapplebeck | Francis | abt 1808 | Newton on Ouse | 1861 |
| Marchbank | Frank | abt 1831 | Bury | 1881 |
| Marchbank | Rebecca | abt 1817 | Langcliffe | 1871 |
| Marchbank | Thomas | abt 1796 | Settle | 1851 |
| Margaret | Francis | abt 1805 | Burton cum Walden | 1851 |
| Marples | Henry | abt 1847 | Ossett with Gawthorpe | 1861 |
| Marsden | Annie | abt 1865 | Walmersley and Shuttleworth | 1891 |
| Marsden | Elizabeth | abt 1821 | Habergham Eaves | 1871 |
| Marsden | Elizabeth | abt 1821 | Reedley Hallows | 1851 |
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