Wallingford, Pennsylvania. Wallingford is an unincorporated community in Nether Providence Township, Delaware County in Pennsylvania, United States. Founded in 1687, it is named for Wallingford, England. In 2007, Wallingford was named by Money Magazine as the 9th best place to live in the United States; two other towns in the area made the top 15.
These are just a few of the factors that can lengthen the probate process. As a result, it is a reasonable estimation that an estate will remain open on average for about six months. Obviously, some could be open for as little as four months while others could last upwards of nine months or more. Each estate is different.
Without returns being filed the statue of frauds never starts running. Therefore all 15 years are technically open. I'd strongly suggest that you proceed with the earliest practical open year first which would be 2011 and work your way forward. Then start with the earliest year and work your way forward to 2010.