Baba Ram Rai was the eldest son of the Seventh Sikh Guru, Guru Har Rai Ji who had 2 other children. Guru Harkrishan was the youngest amongst the three siblings. Baba Ji's sister Sarup Kaur was almost four years older than him. Ram Rai was nine years older than Guru Harkrishan. Baba Ji was born in a palace called Sheeh Mahal. It is said that this palace, the residence of Guru Har Rai, was constructed on the model of the Sheesh Mahal of Jaipur.