It was in Paris that he met his wife the also artist Lee Lufkin Kaula (1865 - 1957) in Crecy, France, in 1894.
[2] Celebrated for its Impressionist landscapes, William Kaula was one of the leading painters of the Boston School.
Kaula is among the most talented students of landscape painting under the influence of Tarbell and was known as a "Tarbellite".
Although he seldom (or never) chose themes typically associated with the Boston School, or interiors or formally dressed figures, he is strongly associated with the group, and held a position of esteem in Boston's artistic circles.
As his career progressed, Kaula's aerial landscapes became increasingly expressionist, and now he is considered Tarbell's greatest student.