He was named Buddh Singh at birth , but was later renamed Ranjit Singh .
Six years after their marriage , Raj Kaur gave birth to Maha Singh 's only son on 2 November 1780 .
Raj Kaur was named Buddh Singh at birth , but was later renamed Ranjit Singh .
Six years after their marriage , Raj Kaur gave birth to Maha Singh 's only son on 2 November 1780 .