What type of leaden does Gertrude of Brunswick and Henry V, Holy Roman Emperor have in common?
Henry V, Holy Roman Emperor: Henry V (German: "Heinrich V." ; 11 August 1081/86 – 23 May 1125) was King of Germany (from 1099 to 1125) and Holy Roman Emperor (from 1111 to 1125), the fourth and last ruler of the Salian dynasty. Henry V, Holy Roman Emperor:  Henry's reign coincided with the final phase of the great Investiture Controversy, which had pitted pope against emperor.
i don't know