In 1740, a local farmer, George Willis retrieved a pair of yew saplings from the slopes of Cuilcagh mountain near Florencecourt, County Fermanagh. The trees found on the mountain had an unusual vertical style or fastigiated character  compared to the typical common yew of Britain and Europe. One sapling was presented to his landlord, William Willoughby Cole (later 1st Earl of Enniskillen) who had it planted on his estate at Florence Court. The other was planted in his own garden where it survived until 1865.
The estate's specimen flourished and attracted much attention from visitors and the horticultural community. Cuttings were often taken from the tree for propagation throughout the Kingdom. It became so popular that in 1820, the tree was commercially propagated. It is believed that almost all the Irish yew (fastigiated) specimens common in churchyards throughout the world are derived from this one tree.
The tree is female and so can only be propagated from cuttings. As a result the original tree has lost much of its characteristic shape and is no longer the impressive specimen it once was. Indeed the tree is almost unrecognisable as an Irish yew, with huge holes and an unbalanced shape; echoed in the damage to the trunk.
- The Yew - Tree of deadly poison, incredible age and a universal symbol of regeneration Conservation Volunteers of Northern Ireland. 2004-02-12.
- The original Irish Yew Tree: a tall story National Trust. Retrieved: 2012-03-20.