As Madhubala was a Muslim, the couple faced a lot of opposition from their families.
Madhubala had a life threatening disease.
Madhubala passed away in 1969.
Kishore Kumar's third wife Yogeeta Bali is also a former actress. They separated just a few years after their marriage.
In 1982, Yogeeta got married to Mithun Chakraborty and they have four children together.
Ashok Kumar had a troubled marriage with Shobha Kumar and both of them parted ways after a few years.
Ashok Kumar's grand daughter Anuradha Patel is also an actress. Her husband Kanwaljeet Singh is also a known TV and film actor.
Apart from his work, his personal life also kept him in news. Kishore Kumar got married four times.
Kishore Kumar's son Amit with Anuradha Patel.
In 1950, Kishore Kumar married Bengali singer and actress Ruma Guha Thakurta (second from left). Their marriage ended in 1958.
Ruma and Kishore hadd a son together, Amit Kumar (R) who's also a singer now.
Bollywood actor Ashok Kumar's father Kunjalal Ganguly was a lawyer by profession. His mother Gouri Devi belonged to a wealthy Bengali family.
Ashok Kumar has a son Arup and three daughters Bharati, Rupa and Preeti.
Ashok Kumar's youngest daughter Preeti Ganguly acted in many films. She is best remembered for her comic role as Freni Sethna in 'Khatta Meetha'.
Ashok Kumar's daughter Rupa Ganguly got married to Bollywood actor Deven Verma.
Ashok Kumar's brother Kalyan Kumar Ganguly, better known as Anoop Kumar was also a Bollywood actor. Though he acted in more than 75 films, his best was 'Chalti Ka Naam Gaadi' with his brothers.
Kishore Kumar was the youngest in his family and probably the most successful as well.
Singer, actor, director, musician and producer Kishore Kumar was a multi-talented man.
Ashok, Anoop and Kishore's sister Sati was married to Sashadhar Mukherjee (second from left). He played a major role in bringing Ashok Kumar to the film industry.
Sashadhar Mukherjee was actor Joy Mukherjee's father and actress Kajol's grand father.
In 1960, Kishore Kumar tied the knot with Bollywood actress Madhubala.
Ashok Kumar has two brothers Anoop and Kishore, and a sister Sati Devi.
Mahaakshay Chakraborty, Yogeeta's eldest son is also a film actor.
Kishore Kumar passed away in 1987 at the age of 58. (Picture courtesy: Mid day)
Kishore Kumar got married to Leena Chandavarkar in 1980. The couple have a son together, Sumit Kumar.
From Ashok Kumar, Kishore Kumar to Amit Kumar...meet the family of awesome Kumar brothers