“A Biographical History of Lancaster Co. Being a History of Early Settlers and Eminent Men of the County” by Alex. Harris, 1827 Lancaster, Pa.: Elias Barr & Co., 1872
Pg. 251, HENRY GRUBB emigrated from Wales to Lancaster Co. at an early day.His son, PETER, obtained possession of the Cornwall ore banks, and built a furnace as early as 1725.The title of the property was confirmed to PETER GRUBB by the proprietaries, in 1732.PETER GRUBB died in 1745, leaving two sons, CURTIS and PETER, the former inheriting two-thirds, and the latter one-third of the estate.The estate in 1783 consisted of Cornwall furnace, the Hopewell forges, and Union forge, on the Swatara, at the foot of the Blue Mountains.CURTIS GRUBB was a member of the Pa. Assembly for the years 1775, 1777, 1778 and 1782.(pg. 252) He died in the year 1778.His son, PETER, was Colonel of the 8th battalion of Lancaster County militia.He was a member of the Legislature in the year 1784.