Ogham Writing

Ogham also spelled  Ogam, or Ogum,   alphabetic script dating from the 4th century AD, used for writing the Irish and Pictish languages on stone monuments; according to Irish tradition, it was also used for writing on pieces of wood, but there is no material evidence for this. In its simplest form, ogham consists of four sets of strokes, or notches, each set containing five letters composed of from one to five