Yusuf ibn Abu Dhaqn, known to the West as Josephus Abudacnus or Josephus Barbatus, was an Egyptian Copt who traveled in Europe mainly teaching Arabic in the 17th century CE.
He was born in Cairo around ?1570s CE[1] and learned Greek and Turkish in Egypt.
[1] In 1595 he was sent to Rome with a letter from Pope Gabriel VIII of Alexandria to Pope Clement VIII, where he converted to Roman Catholicism[1] and learned Italian and some ancient Greek and Latin.
[1] His Arabic skills, however, were limited as confessed by him to Scaliger and as confirmed later by Erpenius who studied under him.
[1] He also authored some books, the most well known of which is titled Historia Jacobitarum, seu Coptorum, in Aegypto, Libya, Nubia, Aethiopia, which is not strictly a history but an account of the Coptic liturgical rites of his time.