Lord Herdmanston

Lord Herdmanston was a title in the Peerage of Scotland that was held by the Sinclair or St Clair family.

[5] According to the website sinclairgenealogy.info, the fact that the first proven Baron of Roslin, William St. Clair (died 1297) was made sheriff of Haddington in East Lothian where Herdmanston also is, suggests that he was appointed there to cover his own home area, and given that the name William appears frequently in the St Clair of Herdmanston family suggests that he may have been part of their extended family.

[7] According to Archibald Allan writing in 1900, Henry St Clair of Herdmanston appears to have been a son of the first William de St Clair of Roslin of the 11th century,[5] but this William's existence cannot be proved by contemporary evidence and according to Roland Saint-Clair, William St. Clair who died in 1297 was the first proven Baron of Roslin.

[8] The Sinclairs of Herdmanston are recorded by James Balfour Paul in his The Scots Peerage.

[2] Roland Saint-Clair writing in the late 19th century lists the following Lords Herdmanston:[4]

Arms of Lord Herdmanston, recorded in the 14th century Gelre Armorial : Argent , a cross engrailed azure . [ 1 ]
Arms of Lord Herdmanston, recorded in the 19th century: Argent, a cross engrailed sable . [ 2 ]