St Tugual's Chapel dates back to the 11th century when the island was a haven for an order of Norman monks. However, there is evidence that the site has had religious significance since the 6th century. The chapel was designed in such a way that they could sit in the building's north nave without being seen by the public who would sit in the west portion of the chapel.
In the years before the Wood family took hold of the lease on the island, in 1949, the grounds around the west and south of the chapel had become overgrown and it was in their time that the churchyard come garden was made around the church.
References:Rosenborg Palace was built in the period 1606-34 as Christian IV’s summerhouse just outside the ramparts of Copenhagen. Christian IV was very fond of the palace and often stayed at the castle when he resided in Copenhagen, and it was here that he died in 1648. After his death, the palace passed to his son King Frederik III, who together with his queen, Sophie Amalie, carried out several types of modernisation.
The last king who used the place as a residence was Frederik IV, and around 1720, Rosenborg was abandoned in favor of Frederiksborg Palace.Through the 1700s, considerable art treasures were collected at Rosenborg Castle, among other things items from the estates of deceased royalty and from Christiansborg after the fire there in 1794.
Soon the idea of a museum arose, and that was realised in 1833, which is The Royal Danish Collection’s official year of establishment.