Pennsylvania does not recognize legal separation. You can be married, divorce or single only. Therefore, the term final separation is likely another name for a divorce. Or the term could refer to the day that the two spouses became separated from one another. The date of separation is an important date for the court to determine when dividing the marital assets and debts during the divorce proceeding. To learn more about filing for divorce in Pennsylvania and the meaning of the term final separation, talk with a licensed attorney in your area. In addition, the Pennsylvania Bar Association has a written pamphlet on its website that may answer some of the questions that you have regarding filing for divorce, http://www.pabar.org/clips/divorceandseparation.pdf.For information about the different grounds for divorce in Pennsylvania, read http://www.freelegalaid.com/nav/pennsylvania/divorce/article/pennsylvania-divorce-law-grounds-divorce.