Complex sentence: The most famous exponent of'Whiggery' was Thomas Babington Macaulay who published the first volumes of his "The History of England from the Accession of James II" in 1848-it proved an immediate success and replaced Hume's history to become the new orthodoxy.
Split into simpler sentences: The most famous exponent of'Whiggery' was Thomas Babington Macaulay, who published the first volumes of his "The History of England from the Accession of James II" in 1848. It proved an immediate success and replaced Hume's history to become the new orthodoxy.