c# sort a list by 2 values

   I have a person list and I want to sort it first by pos number and get last entry with the higher pos and then if there are more entries with the same pos number , sort them by date and get last date and show the results in a new list. The problem is when I get more entries with the same pos number i get the entry with first date .

  List<Person> people = new List<Person>();
            Person p1 = new Person() { Name = "john", data = new DateTime(2015, 9, 4), pos = 0 };
            Person p2 = new Person() { Name = "danny", data = new DateTime(2015, 6, 19), pos = 1 };
            Person p3 = new Person() { Name = "john", data = new DateTime(2015, 4, 5), pos = 1 };
            Person p4 = new Person() { Name = "danny", data = new DateTime(2015, 7, 19), pos = 1 };
            Person p5 = new Person() { Name = "john", data = new DateTime(2015, 3, 5), pos = 2 };
            people.Add(p1); people.Add(p2); people.Add(p3); people.Add(p4); people.Add(p5);

            List<Person> ordered = people.OrderByDescending(x => x.pos).ThenBy(x => x.data).ToList();

            List<Person> unique = new List<Person>();
            foreach (Person result in ordered)
            {
                if (unique.Any(x => x.Name == result.Name))
                    continue;
                unique.Add(result);
            }
            foreach (Person result in unique)
            {
                Console.WriteLine(result.Name + " @ " + result.data);
            }