I have some info on the Jarecki's in Wilkes Barre, Pa.
My father's name was originally Joe Jarecki. He was born in 1920 in Wilkes Barre, Pa.
His Father was Michael Jarecki he was a stone mason in Poland. He married Catherine Smiech in the US.
Michael Jarecki died in 1952 at the age of 83 Catherine Jarecki died in 1927.
There was a brother of Michael Jarecki Frank Jarecki
My father Joe had six(6) siblings Victoria Jarecki Veronica Mary Jenny Eleanor
My father Joe has the impression that there was a group of people, from the same part of Poland, that came to the US and settled in Wilkes Barre. That they "cousins" or some other affinity and the used the names Jarecki and Janeski interchangably.