The title was created in 1831 for
Sir Edward Lloyd, 2nd Baronet, who had earlier represented
Flint Boroughs and
Beaumaris in the
House of Commons. His son, the second Baron, sat as a
Member of Parliament for
Flintshire and
Lichfield and served as
Lord Lieutenant of Merionethshire. The second baron had assumed the additional surname of Mostyn by royal licence in 1831, on the death of
his mother's brother, the last of the
Mostyn baronets. His eldest son and heir the Hon.
Thomas Lloyd-Mostyn, who also represented Flintshire in Parliament, predeceased his father. Lord Mostyn was therefore succeeded by his grandson, the third Baron (the son of Thomas Lloyd-Mostyn). The 6th Baron died on 22 March 2011 and was succeeded by his only son. The Baronetcy of Pengwerra in the County of Flint, was created in the
Baronetage of Great Britain in 1778 for Edward Lloyd, with remainder to his nephews. He was succeeded according to the special remainder by his eldest nephew, the aforementioned second Baronet, who was elevated to the peerage in 1831. The family seat is
Mostyn Hall, near Mostyn. ==Lloyd Baronets, of Pengwerra (1778)==