Marriage of 25 years old boy with 80 years grandmother

of India says that an India young boy 25 years got marry to his 80 years
This Indian young boy that called Narayan Biswas said about his
this act: I got married to my grandma to me could attend her and do her works well than before.
Undoubtedly, I can pay attention to her as a husband not grandson. 
Husband has
more responsibility than grandson does! Narayan Biswas that work in rice farm. 
He added also: my grandma is very happy that got married to me, because I am
young. We held tradition wedding of India.