By a staff reporter: Mahatma Gandhi’s fifth grandson, author-activist Arun Manilal Gandhi dies at the age of 89. Arun's son and author Tushar Gandhi is deeply bereaved to lose his father and shared the news on twitter today. Arun Gandhi died at Kolhapur in Maharashtra on Tuesday morning after brief illness. The funeral of the author and socio-political activist will take place at Kolhapur later today. Arun Gandhi followed in the footsteps of his grandfather and 'the father of nation' as an activist.