Machen 1859
Machen School 1876
Machen Juniors 1889
Machynlleth 1863
Machynlleth Juniors 1873
Madeira (Wrexham) 1867
Maelor 1821
Maerdy 1870
Maesglas 1874
Maesgwyn 1880
Maeshafn 1866
Maesllwch Park 1875
Maesmynau 1881
Maesteg 1826
Maesteg Good Templars 1874
Maesteg Juniors 1867
Maesteg Rovers 1879
Maesteg Wanderers 1886
Credit – Glamorgan Cricket Archives.
Maesycymmer 1874
Maesydderwen 1875
Magor 1864
Malpas 1874
Mamhilad 1892
Mancot 1876
Manod School (Ffestiniog) 1882
Manorbier 1878
Manorowen 1860
Manorowen Juniors 1889
Marchwiel Hall 1883
Mardy 1891
Margam 1875
Margam Institute 1893
Margam Juniors 1897
Margam Park 1894
Marquis of Anglesey’s XI (Plasnewydd) 1888
Mawddwy 1872
Meifod 1873
Melincrythan 1879
Melyn 1895
Melyn White Stars 1889
Menai Bridge 1884
Merthyr (see Merthyr)
Merthyr Mawr 1857
Merthyr Vale 1875
Merthyr Vale Juveniles 1895
Merton House, Penmaenmawr 1891
Mid-Flintshire 1873
Milford Haven 1850
Milford Haven College 1867
Milford Haven Garrison 1875
Milford Haven Juniors 1860
Milford Haven Juveniles (New Milford) 1862
Milford Haven Rovers 1887
Minera 1878
Miskin 1893
Mold 1842
Mold Church 1875
Mold Church Choir 1876
Mold Druids 1877
Mold Foundry 1874
Mold Levites 1886
Mold Tinplate 1876
Monmouth 1838
Monmouth Butterflies 1876
Monmouth Commercials 1866
Monmouth Grammar School 1872
Monmouth Juveniles 1882
Monmouth Rifles 1881
Monmouth School Holiday Club 1882
Monmouth Wanderers 1874
Monmouthshire Militia 1855
Monmouthshire Owls 1879
Monmouthshire Rifle Volunteers 1861
Montford 1871
Montgomery 1850
Montgomeryshire 1852
Moreton 1869
Moss Valley (New Broughton) 1876
Mostyn Hall Boys 1898
Mostyn Park 1886
Mountain Ash 1861
Mountain Ash Duffryn 1895
Mountain Ash Newton 1884
Mountain Ash Veterans 1861
Mount Zion (Brymbo) 1878
Mumbles 1870
Mumbles United 1879
Mumbles Visitors 1871
Mwyndy Iron Ore 1875
Mynyddbach 1895