Síol Anmchadha (Irish: Síl n-Anmcadha) was a sub-kingdom or lordship of Uí Maine, and ruled by an offshoot of the Uí Maine called the Síol Anmchadha ("the seed of Anmchadh"), from whom the territory took its name. It was located in Connacht, Ireland.
The ruling dynasty later took the surname Ó Madadháin, anglicised as Maddan or Madden. In the later medieval era, they were sometimes vassals of the Earls of Ulster and their successors, the Clanricardes.
Legacy
In 1651, after the area had been incorporated into the Kingdom of Ireland, land belonging to the Madden, Kelly, Burke and other families was appropriated during the Cromwellian conquest of Ireland. In particular, the English brothers John Eyre and Edward Eyre took much land. "Eyrecourt" in the area is named after them (it was originally called Dún an Uchta) and their descendant became Baron Eyre.