Arthur Black

CB took custody of her niece Speedwell ; in January 1893 this situation became permanent when her elder brother committed suicide after killing his wife and youngest child.

All of the Black children were well educated and several of them went on to achieve significant accomplishments. Constance's brother Arthur , for example, was a noted mathematician before his early and horrifying death, when...

She was rescued from her suicidal thoughts by her brother Arthur —who, ironiclly, later took his own life, as well as that of his wife and son.