Question: Of which language was the inscription on a recently discovered spindle-whorl found in 1970 in Orkney, Scotland, which is considered an early medieval alphabet for the 6th century?

Context articles: Ogham inscription
Medieval India
Ogham
Astana Gede inscription
Vatteluttu alphabet
Cippi of Melqart
Lemnian language
History of the Irish language
Buckquoy spindle-whorl
Salic law

There are roughly 400 known ogham inscriptions on stone monuments scattered around the Irish Sea, the bulk of them dating to the 5th and 6th centuries.
 Their language is predominantly Primitive Irish, but a few examples record fragments of the Pictish language.
 Ogham itself is an Early Medieval form of alphabet or cipher, sometimes known as the "Celtic Tree Alphabet".
Medieval India refers to the period of the Indian subcontinent's history from the 6th century to the 16th century.
 It is divided into two periods: The 'early medieval period' which lasted from the 6th to the 13th century and the 'late medieval period' which lasted from the 13th to the 16th century, ending with the start of the Mughal Empire in 1526.
 The Mughal era, from the 16th century to the 18th century, is often referred to as the early modern period, but is sometimes also included in the 'late medieval' period.
Ogham ( ; Modern Irish ] or ] ; Old Irish: "ogam" ] ) is an Early Medieval alphabet used to write the early Irish language (in the "orthodox" inscriptions, 1st to 6th centuries AD), and later the Old Irish language (scholastic ogham, 6th to 9th centuries).
 There are roughly 400 surviving orthodox inscriptions on stone monuments throughout Ireland and western Britain; the bulk of which are in southern Munster.
 The largest number outside Ireland are in Pembrokeshire, Wales.
Astana Gede inscription, also known as Kawali inscription, refers to six inscriptions discovered in Kabuyutan Kawali area, Ciamis Regency, West Java; the main inscription (Kawali I) bears the longest scripts.
 All of the inscriptions were written in Sundanese language and in Sunda script (Kaganga).
 Although the inscription does not contain chandrasangkala (chronogram), the inscription was thought to be originated from the second half of the 14th century, based on the name of the king mentioned in this inscription.
The Vaṭṭeḻuttu alphabet, also spelled Vattezhutthu (literally "rounded script", Tamil: வட்டெழுத்து , "vaṭṭeḻuttu ", ] ; Malayalam: വട്ടെഴുത്ത് "vaṭṭeḻuttŭ ") is an abugida writing system originating from the ancient Tamil people of South India.
 Developed from Tamil-Brahmi, Vatteluttu is one of the three main alphabet systems developed by Tamil people to write the Proto-Tamil language, alongside the ancient Grantha or Pallava alphabet and the Tamil script.
 The syllabic alphabet is attested from the 6th century CE to the 14th century in present-day Tamil Nadu and Kerala states of India.
 It was later supplanted by modern Tamil script and Malayalam script.
 Vaṭṭeḻuttu replaced Tamil-Brahmi for writing Tamil after the 2nd century CE.
 This rounded form of writing was also used in Kerala to write in Tamil as well as in proto-Malayalam and Malayalam language.
 Currently, Malayalam uses the Malayalam script.
 Inhabitants of Kuccaveli, located north of Trincomalee, used the Vaṭṭeḻuttu script between the 5th and 8th centuries, attested to on rock inscriptions found there.
 Inscriptional records in Tamil date from 300 BCE to 1800.
 Grantha was an alphabet in which extra letters were created specifically for Sanskrit words.
 It was also a modified form of Tamil script to write Sanskrit granthas or books.
 In Tamil, many of the letters which are found in Sanskrit do not exist.
The Cippi of Melqart is the collective name for two Phoenician marble cippi that were unearthed in Malta under undocumented circumstances and dated to the 2nd century BC.
 These are votive offerings to the god Melqart, and are inscribed in two languages, Ancient Greek and Phoenician, and in the two corresponding scripts, the Greek and the Phoenician alphabet.
 They were discovered in the late 17th century, and the identification of their inscription in a letter dated 1694 made them the first Phoenician writing to be identified and published in modern times.
 Because they present essentially the same text (with some minor differences), the cippi provided the key to the modern understanding of the Phoenician language.
 In 1764, the French scholar Jean-Jacques Barthélémy relied on their inscription, which used 17 of the 22 letters of the Phoenician alphabet, to decipher the unknown language.
The Lemnian language was a language spoken on the island of Lemnos in the 6th century BC.
 It is mainly attested by an inscription found on a funerary stele, termed the Lemnos stele, discovered in 1885 near Kaminia.
 Fragments of inscriptions on local pottery show that it was spoken there by a community.
 In 2009, a newly discovered inscription from Efestia was reported.
 Lemnian is largely accepted as being closely related to Etruscan.
 After the Athenians conquered the island in the latter half of the 6th century BC, Lemnian was replaced by Attic Greek.
The history of the Irish language begins with the period from the arrival of speakers of Celtic languages in Ireland to Ireland's earliest known form of Irish, Archaic Irish, which is found in Ogham inscriptions dating from the 3rd or 4th century.
 After the conversion to Christianity in the 5th century, Old Irish begins to appear as glosses and other marginalia in Latin manuscripts, beginning in the 6th century.
 It evolved in the 10th century to Middle Irish.
 Early Modern Irish, otherwise known as Classical Irish, was a literary language that represented a transition between Middle and Modern Irish.
 It was used by writers in both Ireland and Scotland until the 17th century, in the course of which slowly but surely writers began writing in the vernacular dialects, Ulster Irish, Connacht Irish, Munster Irish and Scottish Gaelic.
 As the number of hereditary poets and scribes dwindled under British rule in the early 19th century, Irish became a mostly spoken tongue with little written literature appearing in the language until the Gaelic Revival of the late 19th century.
 The number of speakers was also declining in this period with monoglot and bilingual speakers of Irish increasing adopting only English: while Irish never died out, by the time of the Revival it was largely confined to the less Anglicised regions of the island, which were often also the more rural and remote areas.
 In the 20th and 21st centuries, Irish has continued to survive in Gaeltacht regions and among a minority in other regions.
 It has once again come to be considered an important part of the island's culture and heritage, with efforts being made to preserve and promote it.
The Buckquoy spindle-whorl is an Ogham-inscribed spindle-whorl dating from the Early Middle Ages, probably the 8th century, which was found in 1970 in Buckquoy, Birsay, Orkney, Scotland.
 Made of sandy limestone, it is about 36 mm in diameter and 10 mm thick.
 It is the only known spindle-whorl with an Ogham inscription.
Salic law ( or ; Latin: "Lex Salica" ), or Salian Law, was the ancient Salian Frankish civil law code compiled around AD 500 by the first Frankish King, Clovis.
 Recorded in Latin and in what Dutch linguists describe as one of the earliest known records of Old Dutch, perhaps second only to the Bergakker inscription, it remained the basis of Frankish law throughout the early Medieval period, and influenced future European legal systems.
 The best-known tenet of the old law is the principle of exclusion of women from inheritance of thrones, fiefs and other property.
 The Salic laws were arbitrated by a committee appointed and empowered by the King of the Franks.
 Dozens of manuscripts dating from the 6th to 8th centuries and three emendations as late as the 9th century have survived.