Marquess of Lothian

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Marquessate of Lothian
Arms: Quarterly: 1st & 4th, Azure, a Sun-in-Splendour proper (Lothian, as a coat of augmentation); 2nd & 3rd, Gules, on a Chevron Argent, three Mullets Gules (Kerr of Jedburgh). Crests: 1st, A Sun-in-Splendour proper (Lothian); 2nd, A Stag's Head cabossed Argent (Kerr of Jedburgh). Supporters: Dexter: An Angel proper, vested Azure, surcoated Vert, winged and crined Or; Sinister: A Unicorn Argent, armed crined and unguled Or, gorged with a Collar Gules, charged with three Mullets Argent.
Creation date	23 June 1701
Created by	William III & II
Peerage	Peerage of Scotland
First holder	Robert Kerr, 4th Earl of Lothian
Present holder	Ralph Kerr, 14th Marquess of Lothian
Heir apparent	John Kerr, Earl of Ancram
Remainder to	Heirs male whatsoever
Subsidiary titles	Earl of Lothian Earl of Ancram (1633) Earl of Ancram (1701) Viscount of Briene Lord Newbattle Lord Jedburgh Lord Kerr of Newbattle Lord Kerr of Nisbet, Langnewtoun, and Dolphinstoun
Status	Extant
Seat(s)	Ferniehirst Castle
Former seat(s)	Newbattle Abbey Blickling Hall
Motto	SERO SED SERIO (Late, but in earnest)

Marquess of Lothian is a title in the Peerage of Scotland, which was created in 1701 for Robert Kerr, 4th Earl of Lothian. The Marquess of Lothian holds the subsidiary peerages of Earl of Lothian (created 1606 and 1631), Earl of Ancram (created 1633 and 1701), Viscount of Briene (1701), Lord Newbattle (1591), Lord Jedburgh (1622), Lord Kerr of Newbattle (1631), Lord Kerr of Nisbet, Langnewtoun, and Dolphinstoun (1633), Lord Kerr of Newbattle, Oxnam, Jedburgh, Dolphinstoun and Nisbet (1701), and Baron Ker, of Kersheugh in the County of Roxburgh (1821), all but the last in the Peerage of Scotland. As The Lord Ker in the Peerage of the United Kingdom, previous marquesses sat in the House of Lords before 1963, when Scottish peers first sat in the House of Lords in their own right. The holder of the marquessate is also the Chief of Clan Kerr.

The 13th Marquess of Lothian was better known as the Conservative politician Michael Ancram. In November 2010, he received a life peerage as Baron Kerr of Monteviot and so became entitled to sit in the House of Lords. He lived at Monteviot House in Roxburghshire. The family previously owned a larger Scottish seat, Newbattle Abbey in Midlothian, which is now a college, and also Blickling Hall in Norfolk, which now belongs to the National Trust.

The 14th and current Marquess is Ralph Kerr, brother of the 13th Marquess. He owns Ferniehirst Castle in Roxburghshire, which is the family seat that was restored by the 12th Marquess, and Melbourne Hall in Derbyshire. The heir apparent is his eldest son John.