The court of Additional District Judge (5th) Daya Ram held Deen Dayal Tiwari guilty of the murders on a petition filed by his brother Dinanath Tiwari.
The wife Siya Lali was 30 years old at the time of the murder while the daughters were aged between two and eight.
The incident took place in the midnight on November 11, 2011 when Deen Dayal, a resident of Moia Kapurpur village in Purakalandar police station area of Faizabad, hacked the five to death with an axe.
According to police, Deen Dayal killed them as he believed that Siya was having an extra marital affair.