...John Sinclair, the widely known ballad-singer. After 1845 Mr. Forrest spent two more years in England, during which his friendship with Mr. Macready was broken. He had acted with great success in Virginius and other parts, but when he attempted to personate Macbeth he was hissed by the audience. This hissing was attributed to professional jealousy on the part of Macready. A few weeks after, when Ma...