 Marjorie Wilkes Huntley was a third woman who occasionally lived with them, and who would go on to become office executive under H. G. Peter.Marston was the creator of the systolic blood pressure test, which became one component of the modern polygraph invented by John Augustus Larson in Berkeley, California.Marston's wife, Elizabeth Holloway Marston, suggested a connection between emotion and blood pressure to William, observing that, "[w]hen she got mad or excited, her blood pressure seemed to climb".