Murchadh

Murchadh is masculine given name of Irish origin, used in the Irish and Scottish Gaelic languages.

Etymology
A Dictionary of First Names, published by Oxford University Press, defines the Irish name as being derived from the Gaelic elements muir, meaning "sea"; and cadh, meaning "battle". In the same book, the Scottish Gaelic name is defined as being a modern form of the Gaelic name Muireadhach, which means "lord", but is said to derive from muir, which means "sea".

Anglicised forms
Anglicised forms of the name in Scottish Gaelic are Murdo and Murdoch. As a patronymic surname, Murphy is derived from Murchadh and its patronymics, MacMurchadh and Mac Murchadha

Murchad

 * Murchad mac Áedo, king of Connacht
 * Murchad mac Brain Mut (died 727), king of Leinster
 * Murchad mac Brian Ó Flaithbheartaigh (1419), Irish chieftain
 * Murchad mac Diarmata, king of Leinster, Dublin, and the Isles
 * Murchad mac Flaithbertaig (died 767), chief of the Cenél Conaill
 * Murchad mac Flann mac Glethneachan (fl. 973), king of Maigh Seóla
 * Murchad mac Máele Dúin (fl. 819–833), king of Ailech
 * Murchad Midi (died 715), king of Uisnech
 * Murchad Ua Flaithbertaig (fl. c.1202-1241), bishop of Annaghdown,
 * Murchad mac Briain, son of Brian Boru who died at the Battle of Clontarf

Murchadh

 * Murchadh an Chapail Ua Flaithbheartaigh, (died 1036), a king of Maigh Seóla / Iar Connacht
 * Murchadh mac Aodha, (died 960), king of Uí Maine
 * Murchadh mac Maenach (died 891), king of Maigh Seóla
 * Murchadh mac Sochlachan, (died 936), king of Uí Maine
 * Murchadh Mac Suibhne, (died 1267), Norse-Gaelic nobleman
 * Murchadh Ó Cuindlis, (fl. 1398-1411) Irish scribe
 * Murchadh Ó Madadhain, (fl. 1347-1371), chief of Síol Anmchadha
 * Murchadh Ó Madadhan, (1327), king of Síol Anmchadha
 * Murchadh Reagh Ó Madadhan, (d. 1475), chief of Síol Anmchadha

Murdo

 * Alex Murdo Macleod (1932–2006), Free Church of Scotland minister
 * Murdo Fraser (born 1965), Scottish politician
 * Murdo MacDonald, several people
 * Murdo Macfarlane (Murchadh MacPhàrlain; 1901-1982), Scottish Gaelic poet
 * Murdo MacKay (1917–2000), Canadian ice hockey player
 * Murdo Mackay (born 1956), Scottish businessman
 * Murdo MacKenzie, several people
 * Murdo MacKenzie (1850–1939), Scottish businessman
 * Murdo MacKenzie (1835–1912), minister and moderator of the Free Church of Scotland
 * Murdo Maclean (born 1943), Scottish businessman
 * Murdo Young McLean (1848–1916), Canadian publisher
 * Murdo MacLeod, several people
 * Murdo MacLeod (born 1958), Scottish former professional football player
 * Murdo MacLeod (born 1947), Scottish professional snooker player
 * Murdo J. MacLeod, Scottish historian
 * Murdo Martin (1917–1989), Canadian politician
 * Murdo McDougall, Scottish football manager
 * Murdo Scribe (1920–1983), Swampy Cree educator
 * Murdo Tait (born 1938), Scottish footballer