Date: 1757, 1769
"As thus to touch his iron heart they try'd, / The Cyclops smiling, scornful thus reply'd:"
preview | full record— Wilkie, William (1721-1772)
Date: 1762
"To mine the king of Iniscon,' said Connal, 'heart of steel'"
preview | full record— Ossian; Macpherson, James (1736-1796)