Examples from the Web for blackhead
He selected a wretch named Blackhead, who had formerly been convicted of perjury and sentenced to have his ears clipped.
There really was a plot; and this would have been proved if Blackhead had not been bought off.
I remember one time they had just a little patch of blackhead sugar cane.Slave Narratives: a Folk History of Slavery in the United States From Interviews with Former Slaves|Work Projects Administration
It is curious to note that the German variety is called the Schwartzkopf, the meaning of which is "blackhead."The Romance of War Inventions|Thomas W. Corbin
The summons was promptly obeyed, and the accused prelate was brought face to face with Blackhead before the Council.