English terms with diacritical marks
The Old English Latin alphabet began to replace the Runic alphabet in the 9th century, due to the influence of Celtic Christian missionaries to the Anglo-Saxon kingdoms. The orthography of Old English – which was entirely handwritten in its own time – was not well standardized, though it did not use all the Latin letters, and included several letters not present in the modern alphabet. When reprinted (on a printing press or computer) in modern times, an overdot is occasionally used with two Latin letters to differentiate sounds for the reader:
Celestial Alphabet
The Celestial Alphabet, more commonly known as Angelic Script, is an alphabet described by Heinrich Cornelius Agrippa in the 16th century. It is not to be confused with John Dee and Edward Kelley's Enochian alphabet, which is also sometimes called the Celestial alphabet. Other alphabets with a similar origin are Transitus Fluvii and Malachim.