Complex sentence: The spelling "koog" was used by the poet, Michael Richey, in 1755 and, around 1700, what is now the port of Cuxhaven was still called "Koogshaven".
Split into simpler sentences: The spelling "koog" goes back to the poet, Michael Richey, in 1755. And around 1700 present-day Cuxhaven was still called "Koogshaven".