The fourth Baronet sat as Member of Parliament for Rutland and Portsmouth.
[1] The Mackworth Baronetcy, of The Gnoll in the County of Glamorgan, was created in the Baronetage of Great Britain on 16 September 1776 for Herbert Mackworth,[2] Member of Parliament for Cardiff for many years.
The eighth Baronet was a colonel in the Royal Corps of Signals.
Philip Herbert Mackworth (1897–1958), great-grandson of Herbert Mackworth, second son of the third Baronet, was an air vice-marshal in the Royal Air Force.
Geoffrey Mackworth, fifth son of the sixth Baronet, was a vice-admiral in the Royal Navy.