on the basis of the paintings, furniture, and other objects which are related to the danish royal family, the purpose of the collection is to present the history of denmark in the period from the reign of christian iv to the present.

How would the previous sentence be correctly capitalized?
On the basis of the paintings, furniture, and other objects which are related to the Danish Royal Family, the purpose of the Collection is to present the history of Denmark in the period from the reign of Christian IV to the present.