:Baron Mostyn

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.{{cn|date=April 2024}}

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.{{London Gazette|issue=18803|page=924|date=13 May 1831}} 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.{{cite news|url=http://thoughtsofoscar.blogspot.com/2011/04/lord-mostyn.html |title=The Lord Mostyn |newspaper=The Times |date=2 April 2011}}

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.{{cn|date=April 2024}}

The family seat is Mostyn Hall, near Mostyn.{{cn|date=April 2024}}

• Sir Edward Pryce Lloyd, 1st Baronet (c. 1710–1795)
• Sir Edward Pryce Lloyd, 2nd Baronet (1768–1854) (created Baron Mostyn in 1831)

• Edward Pryce Lloyd, 1st Baron Mostyn (1768–1854)
• Edward Mostyn Lloyd-Mostyn, 2nd Baron Mostyn (1795–1884)
• Hon. Thomas Edward Lloyd-Mostyn (1830–1861)
• Llewelyn Nevill Vaughan Lloyd-Mostyn, 3rd Baron Mostyn{{cite news| url=https://www.bbc.com/news/uk-wales-north-east-wales-41332392| title=Lord Mostyn's 1877 'coming of age' ceremony remembered| work=BBC News| date=20 September 2017| access-date=20 September 2017}} (1856–1929)
• Edward Llewellyn Roger Lloyd-Mostyn, 4th Baron Mostyn (1885–1965)
• Roger Edward Lloyd Lloyd-Mostyn, 5th Baron Mostyn (1920–2000)
• Llewellyn Roger Lloyd Lloyd-Mostyn, 6th Baron Mostyn (1948–2011)
• Gregory Philip Roger Lloyd-Mostyn, 7th Baron Mostyn{{cite web| url=https://www.msn.com/en-gb/money/other/who-are-the-mostyn-family-and-why-do-they-own-so-much-of-llandudno/ar-AAQnC4u| website=msn.com| title=Who are the Mostyn family and why do they own so much of Llandudno| access-date=5 November 2021| author=Mari Jones}} (b. 1984)

The heir presumptive is the present holder's third cousin twice removed, Roger Hugh Lloyd-Mostyn (born 1941), great-great-grandson of the 2nd Baron.{{cite web |url=http://www.cracroftspeerage.co.uk/online/content/index1072.htm |title=Mostyn, Baron (UK, 1831) |access-date=2012-06-09 |url-status=dead |archive-url=https://web.archive.org/web/20130324013442/http://www.cracroftspeerage.co.uk/online/content/index1072.htm |archive-date=2013-03-24 }}

The heir presumptive's heir is his eldest son, Christopher Edward Lloyd-Mostyn (b. 1968)

The heir presumptive's heir's heir is his son Alexander James Lloyd-Mostyn (b. 2000)

{{Infobox COA wide

|image={{center|File:Coronet of a British Baron.svgFile:Arms of Lloyd-Mostyn, Barons Mostyn.svg}}

|escutcheon = Quarterly 1st & 4th per bend sinister Ermine and Ermines a lion rampant Or (Mostyn) 2nd & 3rd Gules a Saracen's head afftrontee erased at the neck Proper, wreathed about the temples Argent and Sable (Lloyd).

|crest = 1st on a mount Vert a lion rampant Or 2nd a Saracen's head as in the arms 3rd a stag trippant Proper attired Or charged on the shoulder with an escutcheon of the second thereon a chevron of the first between three men's heads in profile couped at the neck also Proper.

|supporters = Dexter a stag Proper attired Or charged on the shoulder with an escutcheon Gules thereon a chevron Argent between three men's heads couped in profile Proper sinister a lion Or charged on the shoulder with an escutcheon Argent thereon a cross engrailed and fleurettee Sable between three Cornish choughs Proper.

|motto = Auxilium Meum A Domino (My Help Is From The Lord){{cite book|title= Debrett's Peerage |date=2019 |page=3722}}}}

• Mostyn Baronets

{{Reflist}}

• {{cite book| title=Debrett's peerage, baronetage, knightage, and companionage| editor-first=Charles| editor-last=Kidd| url=https://archive.org/details/b24883797/mode/2up?ref=ol| page=642| date=1903| publisher=London: Dean and son}}
• {{Rayment|date=February 2012}}

{{Extant Barons of the United Kingdom}}

{{DEFAULTSORT:Mostyn}}

Category:Baronies in the Peerage of the United Kingdom

Category:1778 establishments in Great Britain

Category:1831 establishments in the United Kingdom

Category:Noble titles created in 1831

Category:Peerages created for UK MPs