Facebook providing a chance for searching the Last name or Family name to find a person of their interest.
So how do you find people who share the same last name (or surname) as you? Well, use Facebook for this. Here is the procedure for this.
Go to http://www.facebook.com/family
Enter the Family Name or Last Name like (Pathangae,Dharanikota, etc) which you desired to search.
Click on Search button.
Search people in Facebook using surname
Here is the results for your search query.. you can go through the thousands of your surname profiles or into some others profiles as well, and you can find someone who you are looking for also..you can see the results in the below screenshot.
Search people by surname