The Sideways I ꟷ is an epigraphic variant of Latin capital letter I used in early medieval Celtic inscriptions from Wales and southwest England ( Cornwall and Devon). About 36 monumental inscriptions in Wales, and about 15 in Cornwall and Devon, mostly dating from the 5th-6th centuries, make use of this letter. Except for a single inscription from the Isle of Man, it is not found in monumental inscriptions elsewhere. The letter is used exclusively in a word-final position for Latin words (or Latinized Celtic names) in the second declension genitive singular. [1]
The character was proposed for encoding in the Unicode standard in 2011. [2] It has since been encoded at code point U+A7F7 ꟷ LATIN EPIGRAPHIC LETTER SIDEWAYS I in Unicode 7.0. [3]