The members of the ancient house of Rohan were said to possess a tuft of white hair on the front of their heads.
Michelson of Konigsberg describes a curious case in a barrister of twenty-three affected with partial canities.

In the family of both parents there was stated to be congenital premature canities, and some white hairs had been observed even in childhood.

In the fifteenth year, after a grave attack of scarlet fever, the hair to a great extent fell out.

The succeeding growth of hair was stated to have been throughout lighter in tissue and color and fissured at the points.

Soon after bunches of white hair appeared on the occiput, and in the succeeding years small patches of decolored hairs were observed also on the anterior and lateral portions of the scalp.