Fian: the warrior-class
Fid Dub: a wood, north of Cul Silinne, on Medb's march into Ulster
Fid Mor: a wood, north of Dundalk and between it and Sliab Fuait
Fingabair: probably in the Fews Mountains
Finnabair: daughter to Ailill and Medb (pronounced Fín-nū-ūr)
Finnabair: Fennor, on the banks of the Boyne, near Slane, in Meath
Finnabair Slebe: near Imlech Glendamrach
Finncharn Slebe Moduirn: a height in the Mourne Mountains
Finnglas: a river in Conalle Murthemni
Finnglassa Asail: a river south-east of Cruachan