I am grand-daughter of Alex ( Elais, Ilaasz) Koterla. Our name is now spelled Kortello. After years of searching I found my Grandfather had a brother Peter. Alex is the brother of your Peter. I found Peter and his family on a 1911 census im Manitoba. The language spoken in their household was Greek and their land of origin was Greece. i have more info if you would like and would like to hear from you.
Most of my great grandparents came over from Ukraine late 1800- early 1900. I am looking for details for Gowriluk (Hawryliuk), Powadiuk, Kiasko, Karbonic, Koterla.