He was at that time a weak and vacillant youth, given over to the same pleasures and vices which drove his father mad and caused his brother's death. Great Men and Famous Women. Vol. 5 A series of pen and pencil sketches of the lives of more than 200 of the most prominent personages in History
And life became as easy to bear as a vacillant vision seen in dream. The Created Legend
The business could not hold young Weldon's vacillant temperament for long; neither could Diana. Aunt Jane's Nieces in Society