Blazon Quarterly: 1st & 4th: Per pale argent and sable a chevron between a writing pen fessways in chief, and a crescent in base, all counterchanged, a bordure per pale gules and or (Alexander of Ballochmyle) 2nd, per bend azure and argent in chief a star of sixteen points or and in base another star of as many points of the first, on a bend sable, a lion passant of the second between two crosses moline of the third (for Hagart of Bantaskine); 3rd: Gules two straight swords in saltire, points downards proper hilted and pommelled or between two fleurs-de-lys in chief and a base of the second and two mullets in the flanks argent (for McCaul)[1] The Alexander, later Hagart-Alexander Baronetcy, of Ballochmyle, in the parish of Mauchline, in the County of Ayr, is a title in the Baronetage of the United Kingdom.

[2] It was created on 22 January 1886 for Major-General Claud Alexander, who served in the Crimean War and represented Ayrshire South in Parliament as a Conservative.

The third Baronet assumed the additional surname of Hagart.

This was recognised by decree of the Lord Lyon in 1948.

[1] The heir apparent to the baronetcy is the present holder's only son, Claud Miles (born 1998).