People : Agnieszka Kowalczyk to Bogdana Kowalczyk
Alexander Kowalczyk 8 people
Alexandra Kowalczyk 3 people
Alfred Kowalczyk 2 people
Alice Kowalczyk 2 people
Amy Kowalczyk 3 people
Anastasia Kowalczyk 2 people
Andra Kowalczyk 3 people
Andrea Kowalczyk 3 people
Andrew Kowalczyk 9 people
Andria Kowalczyk 3 people
Andrzej Kowalczyk 3 people
Angela Kowalczyk 6 people
Angeline Kowalczyk 2 people
Ani Kowalczyk 2 people
Ann Kowalczyk 4 people
Anna Kowalczyk 17 people
Anne Kowalczyk 4 people
Annette Kowalczyk 3 people
Anthony Kowalczyk 3 people
Antoinette Kowalczyk 2 people
Ashley Kowalczyk 2 people
Barbara Kowalczyk 7 people
Benjamin Kowalczyk 3 people
Beth Kowalczyk 2 people
Betty Kowalczyk 2 people
Bogdan Kowalczyk 2 people