From Old French personal name Locard, Teutonic, Lochard. Stephen and Simon were settled in Lanarkshire and in Ayrshire in the twelfth century They both acquired large territories and held important offices, and the former gave name to Stevenston in Cunningham. Symon Locard witnessed c. 1153—65 the grant of the church of Wicestun (now Wiston) and its two chapels to the Abbey of Kelso (Kelso, 336). He also attested charters by William the Lion, c. 1165—87 (RMP., p. 76; REG., p. 65), and a charter by Alan filius Walteri, dapifer regis, c. 1190 (Kelso, 260), Symon Loccard (Lochard or Locchard) filius Malcolmi Locard confirmed the church of Symondeston with all its pertinents to Kelso, c. 1180, and about same date confirmed the grant of the church of Wudeschirche (now Thankerston) to the same abbey (ibid., 333,338). He also claimed the patronage of the 'capella ville ipsius Symone' (ibid., 335). Malcolm Loccard witnessed resignation of land in Weremundebi and Anant, c. 1194—1214 (Bain, I, 606; Annandale, I, p. 3). About 1210 Malcolm Loccard granted six acres of land 'in villa Simonis de Kyil' to the Abbey of Paisley (RMP., p. 70), and in 1228 witnessed a grant by Hugh de Bygris (Kelso, 186). Jordan Locard witnessed an obligation by Duncanus de Carrie, 1225 (REG., p. 117). A later Symon Locarde witnessed grant of the church of Wicestun to Kelso between 1247—64, and in 1273 he revived the old claim to the patronage of the church of Symondston and kept back the greater part of the tithes (Kelso, 336,334). William Locard witnessed confirmation of the church of Cragyn to Paisley, c. 1272 (RMP., p. 233), and Maucolum Lockare of Ayrshire rendered homage, 1296 (Bain, II, p. 206). Sir George Lockhart, President of the Court of Session, was murdered by Chiesley of Dairy, 1689. The Rosses of Balnagown, Ross-shire, are really Lockharts by name. The myth about an ancestor of the Lockharts securing the heart of Bruce which Douglas perilled in the fight with the Saracens in Spain led to the spelling of the name Lockhart, and the alteration of the coat of arms either to perpetuate the belief, or as Nisbet says 'to make their arms more univocal to the name.' Locarde 1291, Locart 1424, Loccard 1296, Loccart 1684, Lokart 1452, Lokarte 1467, Lokcart 1408, Lockhartt 1637, Lockheart 1672, Lokert 1547, Lokhart 1488, Lokharte 1593, Lokhartt 1614, Lokheart 1432, Lokhert 1621, Lokkard 1585, Lokkart 1507, Lokkert 1503, Lokwert 1591. Andrew Lang (History, I, p. 236) erroneously says the name is territorial, 'de Loch Ard'.

(Anglo-French-Teut.) the A.-French Locard, French Locard, Lochard [from Teutonic Loc- (v. under Lock); with the French diminutive suff. -ard, Teutonic hard, hard, brave] Acc. to Burke (sub nomine Lockhart) Stephen Locard witnessed a charter of Richard de Moreville before 1154, and Malcolm Locard possessed lands in Ayrshire, 1164. Sir Simon Locard, c. 1315-30, is said to have ‘accompanied Sir James Douglas on his expedition with the heart of Bruce and brought home the Scottish forces with the heart of his royal master.’ (Celtic) Dweller at or by a Palace or Castle [Gaelic luchairt (this is the second element of such Scot. place-names as Barlockhart and Drumlockhart]

(Scottish) Descendant of Locard (enclosure, small).

See Lockard above-afar more probable origin than that assigned by tradition. King Robert Bruce ordered his heart to be conveyed to the Holy Land for burial, and the good Sir James, Lord Douglas, was deputed to carry it thither. One of his attendants took his surname of I Lockhart from the circumstance of his having carried the key of the casket! Pegge's Curial. Miscell. p. 229.

The name was originally Locard. The family are descended from Sir Simon Locard of Lee, in Lanarkshire, who, in 1329, accompanied Lord James Douglas with the heart of Robert Bruce to Palestine, from this circumstance he changed his name to Lockheart, as it was formerly spelled, and took for his arms a human heart proper, within a padlock sable, and for a motto, "Corda serata pando," which signifies "Lay open the locked hearts."

Probably foreign. Stephen Locard witnessed a charter of Richard de Morville before 1153 (Douglas, Baronage, i. 323). Jordan Locard 1165 witnessed a charter of Walter Fitz- Alan, Dapifer (Kelso Chart.).