Jean-Guy Philip Boisserolles de St-JulienThe Baron of Hartsyde
The Much Honoured Baron of Hartsyde (Jean-Guy Philip Boisserolles de St-Julien, 20th Baron of Hartsyde)
heir Jean-Guillaume The Younger of Hartsyde
Credentials
- • Verified by The Roll 30 Jun 2025 seeing original Warrant for Letters Patent "Baron of Hartsyde" officially recognised by Lord Lyon 16th Aug 2010
- • Scottish Barony Register, Dignity of the Barony of Hartsyde (County of Lanark) 26th Feb 2010 "2010/02"
- • Burke's Peerage Revised Families. Burke's Peerage (Genealogical Books) Ltd. Updated 2025
- • burkespeerage.com/search.php
- • PLEDGED HEREDITARY TITLE, this label indicates that the holder has formally signed the Roll’s Baronial Pledge — a non-legal declaration of intent that the barony be preserved within the family line and treated as a hereditary dignity. The Pledge operates as a family compact, intended to be retained with the holder’s will and estate papers. In accordance with Roll policy, the title becomes unrecognised by the Roll if the barony is later conveyed outside the family.
Authentication
A note on terminology: “Scottish feudal barony” or “feudal title” is an incorrect, defunct historical term for extant barons. Baronies were feudal until 28 November 2004, when feudal baronies were abolished and the dignity of baron was retained — an extant barony is no longer “feudal”. The correct term is Scottish barony or Scottish baron (or baron, lord or earl in the Baronage of Scotland, collectively the minor barons of Scotland); never “feudal baron”. Why the term is defunct →
A barony pledged on the Roll of Scottish Barons is treated by the Roll as hereditary and not in commercio. A pledged barony later conveyed outside the family forfeits its recognition on the Roll in perpetuity. What “Hereditary on the Roll” means →