Question: The Irton Cross lies chronologically between the Gosforth cross and an Anglo-Saxon cross which probably dates from the 7th or early 8th century, featuring reliefs and inscriptions in what alphabet?

Context paragraphs:
Irton Cross: Irton Cross is an Anglo-Saxon cross in the graveyard of St Paul's Church, Irton with Santon, Cumbria, England.  Dating from the early 9th century, it lies chronologically between the Bewcastle Cross and the Gosforth cross and has greater affinity with the earlier Anglo-Roman style of Bewcastle.

Orkhon inscriptions: The Orkhon inscriptions (Turkish: "Orhun Yazıtları" , Azerbaijani: "Orxon-Yenisey abidəsi" , Turkmen: Orhon ýazgylary ), also known as Orhon Inscriptions, Orhun Inscriptions and the Khöshöö Tsaidam monuments (Mongolian: Хөшөө цайдам , also spelled "Khoshoo Tsaidam", "Koshu-Tsaidam"), are two memorial installations erected by the Göktürks written in Old Turkic alphabet in the early 8th century in the Orkhon Valley in Mongolia.  They were erected in honor of two Turkic princes, Kul Tigin and his brother Bilge Khagan.

Sri Jayanasa of Srivijaya: Dapunta Hyang Sri Jayanasa (IAST: "Ḍapunta Hiyaṃ Śrī Jayanāśa " ) was the first Maharaja of Srivijaya and thought to be the dynastic founder of Kadatuan Srivijaya.  His name was mentioned in the series of Srivijayan inscriptions dated from late 7th century CE dubbed as the "Siddhayatra inscriptions", describing his sacred journey to acquire blessings and also to conquer neighboring areas.  He reigned around the turn of late 7th century to early 8th century, more precisely in the period between 671 and 702 CE.

Franks Casket: The Franks Casket (or the Auzon Casket) is a small Anglo-Saxon whale's bone (not "whalebone" in the sense of baleen) chest from the early 8th century, now in the British Museum.  The casket is densely decorated with knife-cut narrative scenes in flat two-dimensional low-relief and with inscriptions mostly in Anglo-Saxon runes.  Generally reckoned to be of Northumbrian origin, it is of unique importance for the insight it gives into early Anglo-Saxon art and culture.  Both identifying the images and interpreting the runic inscriptions has generated a considerable amount of scholarship.

Ruthwell Cross: The Ruthwell Cross (] ) is a stone Anglo-Saxon cross probably dating from the 8th century, when the village of Ruthwell, now in Scotland, was part of the Anglo-Saxon kingdom of Northumbria.

Bishop of Galloway: The Bishop of Galloway, also called the Bishop of Whithorn, was the eccesiastical head of the Diocese of Galloway, said to have been founded by Saint Ninian in the mid-5th century.  The subsequent Anglo-Saxon bishopric was founded in the late 7th century or early 8th century, and the first known bishop was one Pehthelm, "shield of the Picts".  According to Anglo-Saxon ecclesiastical tradition, the bishopric was founded by Saint Ninian, a later corruption of the British name Uinniau or Irish Finian; although there is no contemporary evidence, it is quite likely that there had been a British or Hiberno-British bishopric before the Anglo-Saxon takeover.  After Heathored (fl.  833), no bishop is known until the apparent resurrection of the diocese in the reign of King Fergus of Galloway.  The bishops remained, uniquely for Scottish bishops, the suffragans of the Archbishop of York until 1359 when the pope released the bishopric from requiring metropolitan assent.  James I formalised the admission of the diocese into the Scottish church on 26 August 1430 and just as all Scottish sees, Whithorn was to be accountable directly to the pope.  The diocese was placed under the metropolitan jurisdiction of St Andrews on 17 August 1472 and then moved to the province of Glasgow on 9 January 1492.  The diocese disappeared during the Scottish Reformation, but was recreated by the Catholic Church in 1878 with its cathedra at Dumfries, although it is now based at Ayr.

Early Indian epigraphy: The earliest traces of epigraphy in the Indian Subcontinent are found in the undeciphered inscriptions of the Indus Valley Civilization (Indus script), which date back to the early 3rd millennium BC.  Two other important archeological classes of symbols are found from the 1st millennium BCE, Megalithic Graffiti Symbols and symbols on punch-marked coins, though most scholars do not consider these to constitute fully linguistic scripts, and their semiotic functions are not well understood.  The earliest deciphered epigraphic inscriptions of significant length are the Edicts of Ashoka of the 3rd century BCE, written in forms of Prakrit in the Brahmi script.  Jain inscriptions in South India written in Tamil-Brahmi, Bhattiprolu alphabet and the Kadamba alphabet are also of relatively early date.  Short Brahmi inscriptions on potsherds from the 4th century BCE have been reported from the ruins of Anuradhapura and are the only pre-Ashokan examples of Brahmi that have received any scholarly acceptance, though reports have appeared in the Indian press claiming potsherd inscriptions from an even earlier period (6th to 4th century BCE).

Gosforth Cross: The Gosforth Cross is a large stone Anglo-Saxon cross in St Mary's churchyard at Gosforth in the English county of Cumbria.  Formerly part of the kingdom of Northumbria, the area was settled by Scandinavians some time in either the 9th or 10th century.  The cross itself dates to the first half of the 10th century.

Vatteluttu alphabet: 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.

Bewcastle Cross: The Bewcastle Cross is an Anglo-Saxon cross which is still in its original position within the churchyard of St Cuthbert's church at Bewcastle, in the English county of Cumbria.  The cross, which probably dates from the 7th or early 8th century, features reliefs and inscriptions in the runic alphabet.  The head of the cross is missing but the remains are 14.5 feet (4.4 metres) high, and almost square in section 22 x 21 1/4 inches (56 x 54 cm) at the base.  The crosses of Bewcastle and Ruthwell have been described by the scholar Nikolaus Pevsner as "the greatest achievement of their date in the whole of Europe".

Supporting paragraphs: Irton Cross Bewcastle Cross
Answer: runic alphabet