[1][5] The following year she won a travel scholarship and, on the advice of John Singer Sargent, spent eighteen months studying in Italy and Holland.

[6] Williams did supply the illustrations for a 1915 prose anthology organised by Margaret Lloyd George to support the National Fund for Welsh Troops.

This work included 114 individual portraits and involved several visits to Downing Street to paint Lloyd George and members of the Cabinet.

During the War and the early 1920s, Williams painted a number of imaginative works with religious overtones, notably The Devil's Daughter in 1917, The Triumph in 1918, The Imprisoned Soul of 1920 and The Menace from 1925.

[8] Williams visited the United States at least five times during her life and in 1922 was commissioned to paint a near life-size portrait of President Warren Harding.

Other notable commissions included portraits of Henry Ford, Field Marshal Slim and the decorative scheme for the Cardiff home of Sir William James.

Although her house in Hamilton Terrace in St Johns Wood was the location of several parties and receptions, particularly when she had new works to show, Williams otherwise appears to have led a somewhat solitary existence and never married.

She maintained a somewhat academic and formal style to her paintings, although there was often an energetic quality to her portraits, and she avoided being influenced by developments in the contemporary art world.