However , in the Historia Brittonum it is the Milesians who attack the tower , which is made of glass .
The Historia Brittonum also mentions settlers being drowned while trying to attack a tower at sea .
In the Historia Brittonum Historia Brittonum is the Milesians who attack the tower , which is made of glass .
The Historia Brittonum also mentions settlers being drowned while trying to attack a tower at sea .