Thorn (letter) in the context of "Eth"

Icelandic orthography uses a Latin-script alphabet which has 32 letters. Compared with the 26 letters of the English alphabet, the Icelandic alphabet lacks C, Q, W, and Z, but additionally has Ð, Þ, Æ, and Ö. Six letters have forms with acute accents to produce Á, É, Í, Ó, Ú and Ý.

The letters eth (⟨ð⟩, capital ⟨Ð⟩), transliterated as ⟨d⟩, and thorn (⟨þ⟩, capital ⟨Þ⟩), transliterated as ⟨th⟩, are widely used in the Icelandic language. Eth is also used in Faroese and Elfdalian, while thorn was used in many historical languages such as Old English. The letters ⟨æ⟩ (capital ⟨Æ⟩) and ⟨ö⟩ (capital ⟨Ö⟩) are considered completely separate letters in Icelandic and are collated as such, even though they originated as a ligature and a diacritical version respectively.

The Old English Latin alphabet generally consisted of about 24 letters, and was used for writing Old English from the 8th to the 12th centuries. Of these letters, most were directly adopted from the Latin alphabet, two were modified Latin letters (Æ, Ð), and two developed from the runic alphabet (Ƿ, Þ). The letters Q and Z were essentially left unused outside of foreign names from Latin and Greek. The letter J had not yet come into use. The letter K was used by some writers but not by others. W gained usage in late Old English under Norman influence, as seen towards the end of the Peterborough Chronicle manuscript, though in this period W was still a ligature and not a full-fledged letter. The manuscripts MS Harley 208, Stowe MS 57, and Cotton Titus D 18 differ in how they arrange the non-standard Old English letters (Harley has Ƿ–ЖƖÞ, Stowe has Ƿ–ЖÞ, Titus has Ƿ–Þ–Ð), but all three manuscripts place them after the standard Latin letters.

The word thou (/ðaʊ/) is a second-person singular pronoun in English. It is now largely archaic, having been replaced in most contexts by the word you, although it remains in use in parts of Northern England and in Scots (/ðu:/). Thou is the nominative form; the oblique/objective form is thee (functioning as both accusative and dative); the possessive is thy (adjective) or thine (as an adjective before a vowel or as a possessive pronoun); and the reflexive is thyself. When thou is the grammatical subject of a finite verb in the indicative mood, the verb form typically ends in -(e)st (e.g., "thou goest", "thou do(e)st"), but in some cases just -t (e.g., "thou art"; "thou shalt").

Originally, thou (in Old English: þū, pronounced [θuː]) was simply the singular counterpart to the plural pronoun ye, derived from an ancient Indo-European root. In Middle English, thou was sometimes represented with a scribal abbreviation that put a small "u" over the letter thorn: þͧ (later, in printing presses that lacked this letter, this abbreviation was sometimes rendered as yͧ). Starting in the 1300s, thou and thee were used to express familiarity, formality, or contempt, for addressing strangers, superiors, or inferiors, or in situations when indicating singularity to avoid confusion was needed; concurrently, the plural forms, ye and you, began to also be used for singular: typically for addressing rulers, superiors, equals, inferiors, parents, younger persons, and significant others. In the 17th century, thou fell into disuse in the standard language, often regarded as impolite, but persisted, sometimes in an altered form, in regional dialects of England and Scotland, as well as in the language of such religious groups as the Society of Friends. The use of the pronoun is also still present in Christian prayer and in poetry.

The Swedish Dialect Alphabet (Swedish: Landsmålsalfabetet) is a phonetic alphabet created in 1878 by Johan August Lundell and used for the narrow transcription of Swedish dialects. The initial version of the alphabet consisted of 89 letters, 42 of which came from the phonetic alphabet proposed by Carl Jakob Sundevall. It has since grown to over 200 letters. The alphabet supplemented Latin letters with symbols adapted from a range of alphabets, including modified forms of þ and ð from Germanic alphabets, γ and φ from the Greek alphabet and ы from the Cyrillic alphabet, and extended with systematic decorations. There are also a number of diacritics representing prosodic features.

The alphabet has been used extensively for the description of Swedish dialects in both Sweden and Finland. It was also the source of many of the symbols used by the Swedish sinologist Bernhard Karlgren in his reconstruction of Middle Chinese.

The Kingdom of Mercia was a state in the English Midlands from the 6th century to the 10th century. For some two hundred years from the mid-7th century onwards it was the dominant member of the Heptarchy and consequently the most powerful of the Anglo-Saxon kingdoms. During this period its rulers became the first English monarchs to assume such wide-ranging titles as King of Britain and King of the English.

Spellings varied widely in this period, even within a single document, and a number of variants exist for the names given below. For example, the sound th was usually represented with the Old English letters ð or þ.