using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {       

        var set1 = new HashSet<Tuple<string, string>>() { 

            new Tuple<string, string>( "John", "Doe" ),

            new Tuple<string, string>( "Jane", "Doe" ),

            new Tuple<string, string>( "George", "Washington" ),

            new Tuple<string, string>( "John", "Adam" ),

            new Tuple<string, string>( "Benjamin", "Franklin" ),

        };

        var set2 = new HashSet<Tuple<string, string>>() { 

            new Tuple<string, string>( "George", "Washington" ),

            new Tuple<string, string>( "John", "Adam" ),

            new Tuple<string, string>( "Benjamin", "Franklin" ),

            new Tuple<string, string>( "Donald", "Duck" ),

            new Tuple<string, string>( "Mickey", "Mouse" ),

        };

        //Get all items in set 1 that is not in set 2 and also all items in set2 that is not in set 1

        var uncommon = set1.Except(set2).Union(set2.Except(set1));

        foreach(var u in uncommon) {

            Console.WriteLine("{0} {1}", u.Item1, u.Item2);

        }

    }

}

​