Cythara is supposed to have come from "Ki-Tar" would have meant in ancient Persian "three strings". Interesting to think that the pandura of ancient Greece was a tri-chord as well. The instrument is labeled "cithara" here. Same type of instrument shown in Stuttgart psaulter, 9th century.
Four monkeys, including one wearing leash attached to box upon which it sits, playing psaltery; one playing bagpipe; and two seated together | Book of Hours | Netherlands, Utrecht | ca. 1490 | The Morgan Library & Museum