Parents and OR Siblings of John V Cook E

I am trying to locate my dad's parents/siblings. My dad was born in 1908/1909 in Jersey City, NJ and was a state child who was raised in Athol, MA. He supposedly had a brother, Raymond, who left home and moved to California for the purpose of working with the circus.We believe his father's name was Andrew and his mother's name was Margaret Drew. I have hit a brick wall and can't seem to find any information. Can you give me some guidence?
Thank you...Peggy Clarke