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:
Ewellic alphabet
The Ewellic script (pronounced "yoo-WELL-ik") was invented by Doug Ewell in 1980 as a way to represent the pronunciation of English and other languages without the precision of the International Phonetic Alphabet (IPA).