The county is well watered by numerous streams. The principal are the Callan, the Tynan and the Tallwater, flowing into the Blackwater, which, after forming the boundary between this county and Tyrone, empties itself into the south-western angle of Lough Neagh.
O'Keeffe, parish priest of Callan, on account of two sentences of ecclesiastical censure pronounced by the cardinal as papal delegate.
It is said to derive its name of Ard-macha, the Hill of Macha, from Queen Macha of the Golden Hair, who flourished in the middle of the 4 th century B.C., but earlier it was named from its situation on the sides of a steep hill called Drumsailech, or the Hill of Sallows, which rises in the midst of a fertile plain near the Callan stream.
Conspicuous among Henry VII.'s adherents in Ireland were the citizens of Waterford, who, with the men of Clonmel, Callan, Fethard and the Butler connexion generally, were prepared to take the field in his favour.