Anthony Coucheron Anthony Coucheron ( also recorded as Anton Coucheron or Anthony Willemsen ; c . 1650 – 14 March 1689 ) was an engineering officer . Coucheron played an important role in the history of Norwegian and Danish fortifications . As Sweden grew to be a great power in the 17th century , there were frequent wars in the Baltic region , and conflict was common along the borders between Sweden & Denmark - Norway . Easy invasions routes from Sweden were fortified on the Danish - Norwegian border with new or upgraded fortresses during this period , effectively establishing the modern borders between Norway & Sweden . Anthony Coucheron played a major role in fortification of the border , both in Norway and Denmark In addition , he participated with honor in combat during the Gyldenløve War . Career . Early career . Coucheron was born about 1650 ( probably in Holland ) . Coucheron worked as construction supervisor in Fredrikstad in 1665 and was assistant to his father 1666 . His father was the Dutch - born Danish - Norwegian Quartermaster General Willem Coucheron , who began the construction of the fortifications at Fredrikstad in 1663 . Together they worked on the fortification which became known as Fredriksten fortress in Halden . In 1673 Anthony Coucheron was sent as lieutenant ( in Norwegian " løytnant " ) to Kongsvinger Fortress in Elverum to prepare plans for expansion of the existing fortification . Coucheron was then promoted to lieutenant commander ( in Norwegian " kapteinløytnant " ) at Akershus in 1674 , and in the same year he was promoted to captain . Gyldenløve War . During the Gyldenløve War ( 1675 – 1679 ) he served from 1675 - 76 as captain of the governor general ' s dragoons . He was then assigned to Denmark , where he served as quartermaster general in charge of military engineering from 1 May 1676 . He served in his father ' s regiment as captain , from 1677 until the regiment was disbanded in 1679 , participating in fighting in Bohuslän , participating in the capture of Karlsten Fortress in Marstrand in July 1677 and was a member of the Danish - Norwegian force led by Norway ' s Governor General Ulrik Fredrik Gyldenløve in the Danish - Norwegian victory over Sweden at the Battle of Uddevalla in 1679 . Service after the Gyldenløve War . After the war he was promoted rapidly ( following in the footsteps of his father ) and became quartermaster general in Norway from 1680 - 1684 . He was also named commandant and colonel at the Danish Christiansø fortress located on Ertholmene in 1681 . The city of Trondheim was destroyed by a fire in April 1681 . Danish - Norwegian King Christian V directed Major General Johan Caspar von Cicignon and Quartermaster General Coucheron to develop plans for reconstruction of the city , which were to include a new fortifications . The resulting design included exterior fortifications , streets optimized to relocate military forces in defense , and a stronghold — Kristiansten Fortress . Construction of Kristiansten Fortress was completed in 1684 . In addition to working on the city reconstruction and fortifications at Trondheim , Kongsvinger and Elverum , he also worked on the remodeling of Akershus Fortress and plans for fortifying Fredrikstad . Coucheron began work on the fortification of Danish Christiansø fortress located on Ertholmene an island east of Bornholm , ( begun in 1684 ) and Fladstrand in Fredrikshavn in 1687 ) . Together with the commandant Jacob Geveke he undertook the fortification of Kronborg ( 1686 – 1688 ) ; after their work was completed Kronborg was considered the strongest fortress of the period in Europe . In 1687 he was installed as commandant at Akershus Fortress , where he died on 14 March 1689 . Family . He was the son of Willem Coucheron and Maria Fessers . He married a Dutch - born woman , Magdalena Alendolphia van Langen , who survived him .