Taran Taz Sheridan

The Sheridan family originated in Co. Longford, being erenaghs of Granard, but later moved to the next county - Cavan - where they became devoted followers of the powerful O'Reillys. The name is O Sirideain in Irish, I.e. descendant of Siridean, a personal name the derivation of which is uncertain. While Cavan is the county in which they are still to be found in greater numbers than elsewhere, the Sheridans are now dispersed widely throughout every province, though less in Munster then elsewhere. The prefix O has been entirely dropped since the seventeenth century