Ibrahim Palace is Saif's ancestral home, 26 km from here.
Saif-Kareena, who completed the formalities of a registered marriage Tuesday, came here with a few selected relatives for a traditional family feast, said a source.
Sharmila Tagore, Saif's mother, reached the mansion in the morning, while the actor's daughter Sarah and sister Soha accompanied them.
From Oct 1, Pataudi Palace, being run by Neemrana Hotels, had put bookings on hold and since than Sharmila has been visiting the mansion regularly.
On Thursday evening, relatives from Pakistan arrived at the Pataudi Palace. The family will stay there till Saturday.
After the death of Nawab Mansoor Ali Khan Pataudi, his son Saif was anointed the 10th nawab of Pataudi (symbolic) by the heads and prominent figures of 52 villages of the area. But for the Friday's function, none of them were invited.
Locals were seen standing near the main gate since morning, but they could not have a glimpse of Saif-Kareena as the security was beefed up by a private company.
Mansoor Ali, who died in New Delhi Sep 22 last year, is buried in the palace compound along with his forefathers.