Konungs skuggsjá
Konungs skuggsjá (Old Norse for "King's mirror"; , modern  (Nynorsk) or Kongespeilet (Bokmål)) is a Norwegian didactic text in Old Norse from around 1250, an example of speculum literature that deals with politics and morality. It was originally intended for the education of King Magnus Lagabøte, the son of King Håkon Håkonsson, and it has the form of a dialogue between father and son. The son asks, and is advised by his father about practical and moral matters, concerning trade, the hird, chivalric behavior, strategy and tactics. Parts of Konungs skuggsjá deals with the relationship between church and state.

A study of the relations of the text's manuscripts was undertaken by Ludvig Holm-Olsen, underpinning his 1983 edition, which is presently the standard one. The most important manuscript is AM 243 a fol., copied in Norway (probably Bergen), around 1275.

Form and contents
The seventy chapters of the text consist of a prologue and two main parts, of which the second may perhaps be subdivided into two sections, one focused on the king's court, the other (more specifically) on the king's justice. In the prologue, the speaker sets out to deal with merchants, kingsmen, the clergy and peasants, but his discussion does not extend much beyond the first two classes. It seems possible that the last two chapters were originally intended for a separate treatment of the clergy.

Prologue
1. The son states the purpose of the work, useful as he considers it to be both as a King's Mirror and as a handbook for a wider audience.

First part. The merchant and the natural world
2. The dialogue between father (himself a kingsman) and son begins. 
3–4. The business and customs of the merchant
5. The sun and the winds 
6–7. The sun's course 
8. The marvels of Norway 
9. Scepticism about the genuineness of marvels 
10–1. Marvels of Ireland 
12–5. Marvels of the Icelandic sea (e.g. whales) and of Iceland (e.g. volcanoes, springs) 
16–20. Marvels of Greenland, its waters, animals, products, climate, etc.
21. Cold and hot zones of the earth
22–3. Navigation, winds and seasons

Second part. (1) The king and his court
24. The king and his court
25. The importance of courtesy () in the royal service
26. Advantages from serving in the king's household
27. Classes among the kingsmen (konungsmenn): hirdmenn, gestir, general officials and officials who serve the king abroad
28. Honoured position of kingsmen
29. The hirð, top layer of kingsmen
30. How to approach the king for a post in the hirð
31. Why not to wear a mantle in the king's presence
32–4. Rules of speech and conversation in the king's hall
35–6. Relation between the quality of crops and the moral standard of government
37. Duties, activities and entertainments of royal guardsmen
38. Weapons of offence and defence
39. Military engines
40–1. Proper manners and customs at the royal court

(2) Truth and justice
42. God's justice
43–4. Responsibilities and position of the king
45. The importance of leniency in the king's judgment
46–9. The importance of severity in the king's judgment, and the Fall of Lucifer
50–3. Further discussion of the relation between justice, peace and mercy.
54. The king's prayer
55. The king's judicial business (again)
56. Speech of wisdom
57–8. The king's judicial business (again)
59–60. Mercy and severity of judgment
61–2. capital punishment
63. God's judgment in the story of David and Saul
64–6. Judgments of Solomon (e.g. with reference Shimei and Adonijah)
67. Solomon's broken promise to Joab
68. When to keep or break promises
69. Kingship, church and God
70. The authority of kings and bishops

Advice
The book gives advice on various subjects, such as seafaring and trading:

Marvels
There are several chapters on marvels in various countries. For example, it tells of an encounter which fits the description of a wild man or Woodwose:

Another story tells that after mass in a church in Ireland, the people found an anchor hanging from a rope from the sky. The anchor got stuck on the church doorway. Looking up, they saw a ship with men, and one came down, as though swimming in the air, to free the anchor. The people tried to grab him, but the bishop forbade them, and the man went back up. The men in the ship cut the rope, and the anchor was kept in the town.

Editions, facsimiles and translations
These are listed here in chronological order:

Hálfdan Einarsson (ed. and trans.), Konungs skuggsjá (Sórey 1768). Editio princeps, with Latin translation.
Keyser, Rudolf et al. Speculum regale. Konungs-skuggsjá. Konge-speilet. Christiania, 1848. https://archive.org/details/speculumregalek04ungegoog/.
Brenner, Oscar (ed.). Speculum Regale: ein Altnorwegischer Dialog. Munich, 1881. PDF available from septentrionalia.net
The Arnamagæan Manuscript 243 ß, folio: The Main Manuscript of Konungs Skuggsjá in Phototypic Reproduction with Diplomatic Text, ed. by George Flom (Urbana: University of Illinois Press, 1915)
Larson, Laurence Marcellus (tr.). The King’s Mirror (Speculum regale-Konungs skuggsjá). Scandinavian Monographs 3. New York: The American-Scandinavian Foundation, 1917. PDF available from Internet Archive and a transcript of the English translation here
Jónsson, Finnur (ed.). Konungs Skuggsjá: Speculum Regale. Det Kongelige Nordiske Oldskriftselskab. Copenhagen, 1920.
Jónsson, Finnur (tr.). Kongspejlet: Konungs skuggsjá. Det Kongelige Nordiske Oldskriftselskab. Copenhagen, 1926. Online edition
Meissner, Rudolf (ed. and tr.). Der Königsspiegel. Konungsskuggsjá. Halle/Saale, 1944.
Magnús Már Lárusson (ed.), Konungs skuggsjá = Speculum regale (Reykjavík: Leiftur, 1955). Modern Icelandic spelling.
Meissner, Rudolf (tr.). Der Königsspiegel. Fahrten und Leben der alten Norweger aufgezeichnet im 13. Jahrhundert. Leipzig und Weimar: Gustav Kiepenheuer, 1978.
Holm-Olsen, Ludvig (ed.). Konungs Skuggsjá. 2nd ed. Oslo: Norsk Historisk Kjeldeskrift-institutt, 1983.
Holm-Olsen, Ludvig (ed.). The King's Mirror: AM 243 a fol. Early Icelandic Manuscripts in Facsimile, XVII. Copenhagen: Rosenkilde and Bagger, 1987. Facsimile
Jónsson, Einar Már (tr.). Le miroir royal. Auribeau-sur-Siagne : Éd. Esprit ouvert, 1997.
Online facsimile of AM 243 i 4to

Secondary literature
Bagge, Sverre. The Political Thought of the King's Mirror. Odense, 1987.
Bagge, Sverre. "Forholdet mellom Kongespeilet og Stjórn." Arkiv för Nordisk Filologi 89 (1974): 163–202.
Grabes, Herbert. Speculum, Mirror and Looking-Glass. Tübingen, 1973.
Holm-Olsen, Ludvig. "The Prologue to The King's Mirror. Did the author of the work write it?" In Speculum Norrœnum. Norse studies in memory of Gabriel Turville-Petre, ed. Ursula Dronke, et al. Odense, 1981. 223–41.
Holm-Olsen, Ludvig (ed.). Handskriftene av Konungs Skuggsja. Bibliotheca Arnamagnaeana 13. Munksgaard, 1952.
Schnall, Jens Eike and Rudolf Simek (eds.). Speculum regale. Der altnorwegische Königsspiegel (Konungs skuggsjá) in der europäischen Tradition. Studia Medievalia Septentrionalia 5. Vienna: Fassbinder, 2000. Göttingen: Vandenhoeck & Ruprecht, 2000.
Schnall, Jens Eike. Didaktische Absichten und Vermittlungsstrategien im altnorwegischen Königsspiegel (Konungs skuggsja). Palaestra. Untersuchungen aus der deutschen und skandinavischen Philologie 307. [Based on the author's 1997 dissertation]
Simek, Rudolf. "The Political Thought in the King's Mirror. A Supplement." In Festschrift für Jónas Kristjánsson. Reykjavik, 1994. 723–34.
Tveitane, Mathias (ed.). Studier over Konungs skuggsjá. Bergen, 1971. Includes a bibliography at pages 188–92.

References

13th-century books
Norwegian literature
Old Norse prose

External links
The King's Mirror at Biodiversity Library - Scan of 1917 English Translation by Laurence Marcellus Larson