Sorting Data using LINQ

Let us consider some Static Data:

ArrayList names = new ArrayList(5);
names.Add("Tony Abbot");
names.Add("Tony A Farrow");
names.Add("Tony Charles");
names.Add("Tony Small");
names.Add("Bob Brown");

Now the LinQ query for sorting data is:

var query = from p in names.Cast<string>()
            let count = p.Split(' ').Length - 1
            let surname = p.Split(' ')[count]
            let givenname = p.Split(' ')[0]
            orderby surname ascending 
            select new
            {
                GivenName = givenname,
                Surname = surname
            };

This returns Data in Ascending Order..