While living in Italy as a small child DeGrazia was exposed to the art of the Catholic Church. Although he never formally participated in church life, this particular series of paintings reflect a deep reverence for all things religious. Instead of the traditional 14 Stations of the Cross, DeGrazia's collection culminates with the resurrection. "I never thought the cycle would be completed unless we had the 15th station where Jesus arises in glory." Station II Jesus takes up His cross.
The middle painting is of Princesses Anne (1709-59), Amelia (1711-86) and Caroline (1713-57), 1721, by Martin Maingaud (active 1692-c. 1725) Presumably commissioned by George II or Queen Caroline. The top and bottom paintings are also said to be versions of the same...But only the middle portrait has been positively identified and is in the Royal Collection. http://www.royalcollection.org.uk/collection/404985/princesses-anne-amelia-and-caroline