Sir John Oldcastle of Martyrs". Oldcastle was also a minor character in the early Elizabethan history play the "Famous Victories of Henry V" (c. 1586?), which is generally thought to have been one of Shakespeare's sources for his plays on Henry IV and Henry V. The genesis of "Sir John Oldcastle" is crucially linked to the fact that when Shakespeare's "Henry IV" plays premiered on stage in 1597–98, the character Sir John Falstaff was called Sir John Oldcastle. This is indicated by abundant external and internal evidence. The change of names, from "Oldcastle" to "Falstaff," is mentioned in seventeenth-century works by Richard James
Oldcastle Materials which included a concrete plant trucking business, and quarries, were sold to Oldcastle Materials in late 2015. Mulzer Crushed Stone was acquired in March 2017 and had approximately 600 employees in three U.S. states at the time. Spokane Rock Products had approximately 120 employees when Oldcastle Materials purchased the company in March 2018. According to United States Geological Survey (USGS) data, Oldcastle Materials was the fourth largest aggregate producer in the United States in 2004. The company ranked third by 2011, and was also the leading sand and gravel producer. Oldcastle Materials was the fourth largest crushed stone producer in