There are many Eero- families.
In Finland:
- Turtola/Pello- area in Northern Finland: first member mentioned with that name is Anund Eriksson Eero, 17th century, father of Anna Anundsdr. Eero, grandfather of Mikko Hanss. Eero, died 1725.
- Isokyrö (Storkyo) - area. See http://sites.google.com/site/eeronsuku/muita-sukuja/kylkala (in Finnish only)