I realize that the information you have posted was some time ago, however, We may have some information that may help you.My father is John Groshong. Alva Groshong was his Grandfather and Mamie Humphrey was his wife.
Ruth Sewell was Mamie Humphrey's sister and Virginia Sewell was Ruth's daughter, If I can remeber correctly.
Guy Groshong was one of four sons of Clearance Alva and Mamie Humphrey. Guy had a twin that died at birth.I beleive they were they were born in Burbank California.Roy Groshong and Julian Groshong were the other sons.Julian was John Groshong's Father.(My Grandfather) I will have to check the records for more infomation if you are still interested please contact me at JDinwiddie@olhcc.edu.