The same year, on Christmas, Josip Jelačić's wife - countess Sofia, gave birth to their daughter Anica on the estate, for which occasion, the banner was raised on top of the manor. However, little Anica soon died as an infant so Jelačić had her body buried Inside St. Joseph chapel. He also planned to build the family tomb on the estate, but died in 1859, before being able to execute this. In his last will, he expressed a wish to be buried next to his daughter in the estate chapel. After the death of Josip Jelačić, the estate became the property of his brother Đuro, who continued managing it and finally completed tomb wished by Josip in 1884. The design for this was made by prominent Austrian architect Hermann Bollé. The construction of the tomb was made out of unused stone, taken from reconstruction of Zagreb cathedral, which was badly damaged in 1880 Zagreb earthquake. After Đuro's death, the castle was inherited by his daughters Anka and Vera. In 1919. countess Vera Jelačić donated the family collection of weapons and paintings from Novi dvori, to what was then Croatian People's Museum. The daughters bequeathed the estate to the Croatian people in 1934. Although Đuro, Hermina, and much of the Jelačić family were initially buried in family arcade in Zagreb's Mirogoj cemetery, their remains were taken to the tomb in Novi Dvori in 1933, by the wish of countess Anka Jelačić. During the night on July 24, 1935, the tomb was looted by unknown vandals.