In
Ptolemy's
Geography, the city is referred to as Aganzana. It is said that the
Sasanian king
Ardashir I reconstructed the city and called it Shahin. Later it was renamed Zangan, whose present name is the
Arabicised form. Historically, Zanjan has also been called Khamseh, meaning "province with five tribes". Zanjan province incorporates areas of the former
Gerrus province.
Former names At least since the
Zand era, Zanjan and its surrounding areas were called Khamseh. In a book named
Mojmal al-Tawarikh-e Golestaneh, while discussing the events of the
Karim Khan Zand era, it mentions the Mahal-e Khamseh (literally, "Khamseh areas") in reference to the regions of Zanjan province. The use of Khamseh for Zanjan could precede the Zand era, since following
Nader Shah's death and the collapse of the great unification of the
Afshar tribes, the tribe of Afshar-e Khamseh returned to the Mahal-e Khamseh. The tribe's name, therefore, had already contained the suffix of "Khamseh" since the era of Nader Shah, and possibly before they had left the Zanjan area to accompany Nader. It can be concluded that at least since the time of Nader and the
Afsharids, the area was called Khamseh. It has been said that when
Karim Khan Zand left
Ardabil and
Khalkhal to suppress
Zaki Khan in
Kashan, he entered Zanjan, and in
Abhar he delegated the governorship of three areas of Mahal-e Khamseh to Zolfagharkhan-e Sultan Irluy-e Afshar. This is another indication of the area's having been named Khamseh at the time of the
Zands. During the
Qajar era, Zanjan province was also known as Khamseh. In the book
Esker-ol-Tavarikh, Etemad Al-Saltaneh discusses
Agha Mohammad Khan Qajar just before the formation of the
Qajar dynasty, using the title of
Hakem-e Khamseh (Governor of Khamseh). In addition,
Mirza Abolhasan Khan Shirazi in his travelogue in the year 1229 Hijri (around 1814) mentions Khamseh. Among European travellers, the first person who used the name Khamseh for the province where
Zanjan was located was
Pierre Amédée Jaubert, sent by
Napoleon Bonaparte to visit
Fath-Ali Shah Qajar's court, and in the year 1804 visited Zanjan city. ==Demographics==