Pachhimrath was one of the five main divisions of the kingdom of Rama

Rama

Rama or full name Ramachandra is considered to be the seventh avatar of Vishnu in Hinduism, and a king of Ayodhya in ancient Indian...

 in prehestoric Awadh

Awadh

Awadh , also known in various British historical texts as Oudh or Oude derived from Ayodhya, is a region in the centre of the modern Indian state of Uttar Pradesh, which was before independence known as the United Provinces of Agra and Oudh...

.

Pachhimrath may be roughly described as the country between Ghaghra and Gomti west to the line from Ayodhya to Sultanpur

Sultanpur District

Sultanpur District is a district in the state of Uttar Pradesh in northern India. The district is a part of Faizabad Division. Its administrative head is Sultanpur.-History:...

. This division included about third of present district of Faizabad

Faizabad

City of Faizabad , previous capital of Awadh, is the headquarters of Faizabad District and a municipal board in the state of Uttar Pradesh, India, situated on the banks of river Ghaghra . Faizabad has a twin city of Ayodhya, which is considered to be the birthplace of Rama...

(including Ambedkarnagar), a small portion of the north of Sultanpur

Sultanpur District

Sultanpur District is a district in the state of Uttar Pradesh in northern India. The district is a part of Faizabad Division. Its administrative head is Sultanpur.-History:...

, greater part of Barabanki

Barabanki District

The Barabanki district is one of four districts of Faizabad division, lies at the very heart of Awadh region of Uttar Pradesh state of India, and forms as it were a centre from which no less than seven other districts radiate...

, and sections of the Lucknow

Lucknow

Lucknow is the capital city of Uttar Pradesh in India. Lucknow is the administrative headquarters of Lucknow District and Lucknow Division....

 and Sitapur

Sitapur

Sitapur formerly spelled as Citapore is a town and a municipal board in Sitapur district in the state of Uttar Pradesh, India. It is in the Lucknow Division of Uttar Pradesh...

districts.