Political and religious writings Hume supported his patron Angus's policy in a series of letters (preserved in the
History of the Houses of Douglas and Angus) on the doctrine of obedience to princes. A discussion of a sermon on the same theme by the
Rev. John Craig is the subject of
Conference betwixt the Erle of Angus and Mr. David Hume, which is printed in
David Calderwood's
History of the Kirk of Scotland. In 1605 a
union tract by
Robert Pont suggested Hume's treatise
De Unione Insulæ Britanniæ, a study in how to effect the closer political union of Scotland and England. The first part
Tractatus I. was published in London (1605). On the relative values of
episcopacy and
presbytery, Hume was a persistent polemicist in discussing the theme: first with
James Law,
bishop of Orkney, from 1608 to 1611; and secondly, in 1613, with
William Cowper,
bishop of Galloway. He was also responsible about the same time for
De Episcopatu, 1 May 1609, Patricio Simsono, to
Patrick Simson. Hume's other major Latin prose writings are his unpublished attack on
William Camden for his depreciatory view of Scotland, written in 1617—
Cambdenia; id est, Examen nonnullorum a Gulielmo Cambreno in "Britannia,"—and a work dedicated to Charles I (Paris, 1626), entitled
Apologia Basilica; seu Machiavelli Ingenium Examinatum, in libro quem inscripsit Princeps. Hume's
Daphn-Amaryllis was a celebration of Anglo-Scottish union, printed in Edinburgh and London editions, in 1603–5. It consists of four
eclogues, and drew on the
Liber Pluscardensis and
John Mair's
Historia, in a setting of "
leonine prophecy". In citing this poem in his second union
Tractatus, Hume explicitly references both the
Lion of Judah (associated with the
Davidic Kingdom), and the
Lion of Scotland, linking both with the "Lion of the North" prophecy of
Paul Grebner; with a simple heraldic code, he also indicated the expansionism of the new kingdom, desiring the removal of the
tressure bordering the Scottish
lion rampant (harking back to the time of
James III of Scotland). The
Lusus Poetici (1605) were ultimately incorporated in
Arthur Johnston's
Deliciæ Poetarum Scotorum (1637). When
Henry Frederick, Prince of Wales died, Hume wrote a memorial tribute entitled
Henrici Principis Justa, and in 1617 he welcomed the king back to Scotland in his
Regi suo Gratulatio. His collected Latin poems were twice issued in Paris, in 1632 and 1639, the second time with additions under the care of his son James, and with the title:
Davidis Humii Wedderburnensis Poemata Omnia. Accessere ad finem Unio Britannica et Prœlium ad Lipsiam soluta oratione. Arthur Williamson has argued that "Scots wrote histories of great families as general histories of Scotland". A grandson of
Alison Douglas, herself a granddaughter of
Archibald Douglas, 5th Earl of Angus, Hume has as his main patron
William Douglas, 11th Earl of Angus, later the 1st Marquess of Douglas. Hume's
History of the House and Race of Douglas and Angus was printed at Edinburgh in 1644 by Evan Tyler, the king's printer. He is thought to have finished the history between 1625 and 1630 (around the year of his death). The title-pages of early copies vary, with some having the title
A Generall History of Scotland, together with a particular History of the Houses of Douglas and Angus. Confusion arose when the editor, Anna Hume, encountered opposition of Angus, who resented the use which Hume had made of some of the material in the family archives. ==Family==