Twenty five years ago I bought a house and land from my wife's grandfather. Did the escrow thing with him. After a year he tried to change the escrow details. Got a loan from the bank and paid him off. About 17 years ago, he died and the estate sold the property to a daughter of his. We have had 17 years of arguing about the property line and use of a road. Repeated threats of lawsuits until last year when the husband of the daughter died. His son sued us over the issue (using Dads insurance money), and we are in year two of a lawsuit and over 50K in legal fees.
Never buy from or deal with family unless everything goes through a lawyer. Our 1997 purchase went through lawyers on both sides, and while their lawyers tells them they won't win, they are just trying to bankrupt us with the costs of defending the suit.
If you are dealing with family, document everything and get everything in writing. Also involve lawyers at every step. It will help you down the road when somebody decides to sue.
Better Yet, NEVER BUY FROM FAMILY!!!!