The Pictish king lists name the seven sons of the legendary Cruidne filius Cinge, first king of the Picts.

Fib
Fidach
Floclaid
Fortrenn
Got
Ce
Circinn
These are the provinces of Pict land.

Bede identifies the northern and southern Picts.

The land of southern Picts divided (8th century) into four territories.

Athfotla (Atholl)
with its capital at Dunkeld (dún Caledonii) under Mount Schiehallion (shee, magic hill, of the Caledonii)

Fibe (Fife)
with its capital at Kirlymont (St Andrews)

Fortrenn
or Fortriu

Circinn
Forfar or Angus and Kincarnadine, with its capital at Forfan under Turin Hill called Dunnechain (dun Nechtain).

A twelfth century manuscript, de situ Albaniae, lists the seven provinces of Pict land before its union with the kingdom of the Scots in 840 CE

Engus cum Moerne (Angus with the Mearns)

Adtheodle et Goverin (Atholl and Gowrie)

Stradeern cum Mentid (Strathearn with Menteith)

Fif cul Fothreve (Fife with Kinross)

Mar cum Buchen (Mar with Buchan)

Muref et Ros (Moray and Ross)

Cathanesia (Caithness)

the Pictish language
the name Pict