He was the son of Sir Humphrey Mackworth of Gnoll, Glamorganshire, MP for Cardiganshire and was educated at Westminster School, Magdalen College, Oxford and the Inner Temple.
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His son, also Herbert, followed him as MP for Cardiff and was created a baronet in 1776.
Herbert's son, Sir Humphrey's grandson, was Sir Herbert Mackworth who held the same Cardiff seat after his father until 1790.
Herbert Hoover | Herbert Kitchener, 1st Earl Kitchener | Herbert von Karajan | Frank Herbert | Herbert Marcuse | Herbert Read | Herbert Blomstedt | Herbert Grönemeyer | Herbert Beerbohm Tree | Matthew Herbert | Herbert Spencer | Victor Herbert | Herbert | Herbert A. Simon | George Herbert | Charles Herbert Best | Herbert Howells | George Herbert, 5th Earl of Carnarvon | Brian Herbert | Aubrey Herbert | Sidney Herbert, 1st Baron Herbert of Lea | Herbert Chapman | Herbert Baumann | Herbert Austin | George Herbert Mead | Herbert Wise | Herbert Gintis | Herbert de Losinga | Henry Herbert, 4th Earl of Carnarvon | Herbert Wilcox |