Filling out the family tree

Greetings from the United States. My name is George Coleman. I was
born George Contemanolis. My mother was Maria Samios who was born in
Kythera, Greece on Feb.15 in either 1907 or 1910 (both records exist).
My mother emigrated to the US to marry Michael Calligeros who died on
April 24, 1944. They had two children (my half-siblings): John
Calligeros and Helen Calligeros. Our mother remarried and I am the only
issue of that union: born April 24, 1947. Maria Samios Calligeros, then
Contemanolis died January 7, 1977.
As a young child, aged 6 and 9, I visited Kythera and recall pilgimages
to Myrtidiotissa and Agia Elesa. I recall staying with my uncle and
aunt George and Dimitra Samios and visiting with an aunt Lambrini and
uncle Vassili. I believe my grandparents' names were John and Katherine
Samios (they died before I was born) and am aware that my mother had
several other siblings, at least two of whom emigirated to Australia.
Minas Samios is the only name of an uncle that I am certain went to
Australia.

My sons (Jordan, now 32) and Ross (now 29) have asked me to shed some
light on their ancestry. This is the focus of my inquiry? My siblings
and I would be most appreciative of any background information that may
be provided regarding our Calligeros/Samios heritage. More can be
learned of my family and our endeavors by visiting web site
www.colemanfamilycamps.com

Thank you,
George Coleman