Harilal was born on 23 August 1888, just before his father left for England for higher studies. Harilal remained in India with his mother. Harilal was involved in the Indian independence movement, and was imprisoned as a satyagrahi six times between 1908 and 1911. His willingness to endure these sentences earned him the nickname of 'Chhote Gandhi'. He too wanted to go to England for higher studies, hoping to become a barrister as his father had once been. His father however firmly opposed this, believing that a Western-style education would not be helpful in the struggle against British rule over India, leading to tensions between father and son. Eventually rebelling against his father's decision, in 1911 Harilal renounced all family ties. In 1906 he married Gulab Gandhi, with whom he had had five children: two daughters, Rani and Manu; and three sons, Kantilal, Rasiklal and Shantilal. Rasiklal and Shantilal died at an early age. He had four grandchildren via Rani, two via Kantilal, and one via Manu. After Gulab died during the 1918 influenza pandemic, Harilal became detached from his children. He contemplated marrying his wife's sister Kumi Adalaja, who was a child widow, however this did not materialize. This led to Harilal's further descent and he gradually began to slip and became an alcoholic. He stayed in touch with his father sporadically through the years, sometimes through commonly known people, right up to 1947. Harilal appeared at his father's funeral in such a derelict condition that few recognized him. Neelam Parikh, the daughter of Ranibehn, the eldest of Harilal's children, wrote a biography of him subsequently, entitled Gandhiji's Lost Jewel: Harilal Gandhi.
Religious conversions
In May 1936, at the age of 48, Harilal publicly converted to Islam and named himself Abdulla Gandhi. However later in 1936, on his mother Kasturba Gandhi's request he converted back to Hinduism through the Arya Samaj and adopted a new name, Hiralal.
Gandhi's letters
In June 1935, Mahatma Gandhi wrote a letter to Harilal, accusing him of "alcohol and debauchery". In the letters, Mahatma Gandhi stated that Harilal's problems were more difficult for him to deal with than the struggle for an Indian republic. In 2014 three letters written by Mahatma Gandhi to Harilal in 1935 were offered for auction. A translation of one of the letters suggest that Gandhi was accusing Harilal of raping either his own daughter, Manu, or his sister-in-law. Tushar Gandhi has suggested that the letter was poorly translated, and that the word being translated as rape may not have actually meant sexual assault.
Death
Harilal died of tuberculosis four months after Gandhi’s death, on the night of 18 June 1948, aged 59. He died at a municipal hospital in Mumbai. His death certificate is preserved at the Brihanmumbai Municipal Corporation’s archives in Vakola. Harilal’s death certificate reveals that he was admitted to the hospital after being found unconscious in Kamathipura. Harilal did not reveal to staff that he was Gandhi's son, and his family only found out about his hospitalisation after his death.
''Gandhi, My Father''
The troubled relationship between Harilal and his father is the subject of the film and play Gandhi, My Father. The film adaptation was released on 3 August 2007 and directed by Feroz Abbas Khan and produced by Anil Kapoor. Harilal is portrayed by Akshaye Khanna. Khan's play, Mahatma vs. Gandhi, while different from this film, had a similar theme. There is also a Marathi play named Gandhi virudh Gandhi.