Preheat oven to 350 degrees. Using an electric mixer, cream butter and sugar together on medium speed - about 3 minutes.
Add eggs, one at a time, beating well after each addition.
Stir in half of the cake flour.
Add whipping cream.
Beat in remaining cake flour and vanilla.
Pour batter into a buttered and floured 9 x 5 inch loaf pan. Bake until golden and a toothpick comes out clean, approximately 60 - 65 minutes.
Cool in pan 5 minutes. Remove from pan and cool completely on a wire rack.
While you enjoy it, think of The King.