Complex sentence: The venue was renamed the Coronet in 1945, with renovations by architects Walker & Gillette, then in 1959 rechristened the O'Neill in honor of the American playwright by then-owner Lester Osterman.
Split into simpler sentences: The venue was renamed the Coronet Theatre in 1945, with renovations by architects Walker & Gillette. In 1959 it was rechristened the O'Neill in honor of the American playwright by then-owner Lester Osterman.