Johann Bayer
Delta Columbae was a latter designation of 3 Canis Majoris, as the early astronomers Johann Bayer and John Flamsteed did not include the constellation Columba in their star charts. It has the uncommon traditional name Ghusn al Zaitun, from the Arabic الغصن الزيتون "al-ghuşn al-zaitūn" "the olive branch" (carried by the dove of Noah's Ark).