Ibracken or Ibrickan, in Clare, [271]

Iceland, [11]

Icelanders, [32]

Idrone, [250], [340]

Ikerrin in Tipperary, [211]

Imaile, [251]

Imokilly [76], [242], [248]

Inchiquin, Barony of, [270]

Inge, Hugh, Bishop of Meath (1512-1521), Archbishop of Dublin (1521-1528), [150], [290], [291]

Ingulf, [32]