Looking for Kujans, Mrykalos and members of Haplogroup K

According to the National Geographic Genographic project I am a member of Haplogroup K. I'd like to find out more about my people!

So far, I know that my mother's maiden name is Mrykalo and she is from Koniuky (sp?) Ukraine. I think her mother's name was Anastasia and that she had step-siblings from her mother's prior marriage. She also had two younger brothers, perhaps one was named Peter. My father's name was Alexander (Aleksai?) Kujan and his parents were living in the US, had children here (Anna, Joseph and Mary?) then moved the family to Eastern Europe* and had more children (Alexander and...?). WWII caused his family to break up - children born in the US were sent back here. My father met my mother in a displacement camp in Germany and then came to the US in the late 40s. I grew up as a Ukrainian Greek Orthodox Catholic (church of the Holy Protection of the Blessed Virgin Mary!) in Connecticut. Alexander died in 1970 and Maria is still living though information is not easy to come by. I think anyone who experienced living in and around Germany during the war years finds it difficult to speak freely about that time and about their families.

According to test results, many Ashkenazi Jews are members of Haplogroup K though apparently there was a group that branched off - are these the Greek Catholics? There are a lot of ?s still but it is early in the search. The more info the better, so if you have any, please send it here!