Ravi Mishra (45) of Alipur died on the spot, while his wife Durgesh (42), daughter Chandani (21) and pillion rider Subhash (22) were injured, SHO Jamo Manoj Tiwari said.
Anothermotorcyclist Ishtiyak Ahmad was badly injured and is undergoing treatment at a trauma centre in Lucknow, he said.
The other three injured were admitted to Community Health Centre (CHC) in Jagdishpur, Tiwari siad.