
1) Irish-language boy name
Found on
https://www.crosswordclues.com/clue/muiredach

Muiredach (Old Irish), Muireadhach or Muireach, anglicized variously to Murdoch, Murtagh, Murdac, Mordacq and other forms, is a Goidelic name (meaning `chieftain`) popular in Scotland and Ireland in the Middle Ages: ...
Found on
http://en.wikipedia.org/wiki/Muiredach
[ealdorman] Muiredach (fl. 958–963) was an ealdorman (dux) in northern England in the reign of Edgar the Peaceable. He is recorded in subscriptions to two royal charters. The first, Sawyer 679, is a grant by King Edgar to Oscytel, Archbishop of York of 10 hides at Hutton in Nottinghamshire, where he is named Mirdach dux, ninth on the eald...
Found on
http://en.wikipedia.org/wiki/Muiredach_(ealdorman)
No exact match found.