'Raise Up the Name of the Dead' in the Bible

Then Boaz said, That day thou buy the field of the hand of Naomi, thou must buy it also of Ruth the Moabitess, the wife of the dead, to raise up the name of the dead upon his inheritance.

Moreover Ruth the Moabitess, the wife of Mahlon, I have purchased to be my wife, to raise up the name of the dead upon his inheritance, that the name of the dead not be cut off from among his brothers, and from the gate of his plac