Answer : 4. "Sawai Bhoj"
Explanation :

1. Lord Shri Devnarayan Ji, the worshipable deity of the Gurjar caste who is said to be the incarnation of Lord Vishnu, was born in Malaseri on the Saptami day of Magh Shukla in Vikram Samvat 968. His father's name was Sawai Bhoj and his mother's name was Sadhu, hence he was known as Sadhu also called his mother's son.

2. Devji's name in childhood was Uday Singh, he was married to Princess Peepal De and two other queens, Nag Kanya and Daitya Kanya. He had a son named Bella who later became the first priest and a daughter named Beeli.