Saryupareen Brahmins

Lord Rama of Ayodhya had organized Ashwvamedha Yajna to get rid of Brahm-Hatya (Killing of a Brahmin-Ravana who was a Brahmin by birth). Lord Rama invited all Brahmins of Aaryavart . Most of the Brahmins did not think proper to attend this Yajna and accepting the Daan from a person who is involved in a Brahm-Hatya. Therefore, they did not participate in Ashvamedha Yajna. But some of intellectual Brahmins went to Ayodhya and participated in Yajna because they thought Brahmins must be not by birth but by Karma(Activity) ,So,They supported Lord Rama's victory as a Victory of Truth over Evils. These Brahmins were finally settled in Ayodhya which is situated on river Saryu and were later known as Saryupareen Brahmins.This Brahmins community mostly believe in Karma, that is why they are known as one of the most intelligent and courageous people on the earth,well known for their never giving up attitude.

 http://en.wikipedia.org/wiki/Saryupareen_Brahmins

Family Tree
http://www.cgbrahmins.com/family-tree-saryupareen-brahmins

Matrimony
http://www.jeevansathi.com/hindi-up-brahmin-saryuparin-matrimony-matrimonials
http://www.saryuparinmatrimony.com/