The property was built in 1739 for grocer (hørkræmmer) Bertil Jegind.
In 1769, it was acquired by Christian Pedersen Brennøe, a manufacturer of ship sails, flags and compasses.
His son, Peter Christian Brennøe, took over the property and business in 1800.
He lived there with his wife Olave F. C. Leth and five children until 1819.
Their daughter Anna Brennøe /later Anna Nielsen) became a successful actress and  opera singer.
 Peter Berg, who took over the business, owned the house for more than forty years.
The architect Johan Daniel Herholdt lived in the building from 1847 to 1853.

Carl Mahnfeldt, a cooper, took over the building in 1852 and founded a company on 2 December that same year.
In 1873, he passed the company on to his son Home Ernst Johan Sophus Mahnfeldt who renamed the company to E. Mahnfeldt.
He died in 1880 just 39 years old and his widow then ran the company under the name E. Mahnfeldt's Enke (E. Mahnfeldt's Widow) until 1914 when she passed it on to their son Ernst Emil Johan Sophus Mahnfeldt.
He died in 1936 and his widow Gerda Mahnfeldt  then ran the company until 1942 when she passed it on to their son Erik E. Mahnfeldt.
He moved the company to new premises at Strandlodsvej 11 on Amager but it continued to own the property at Nyhavn 65 at least until 1950.
The property was built in 1739 for grocer (hørkræmmer) Bertil Jegind. In 1769, it was acquired by Christian Pedersen Brennøe, a manufacturer of ship sails, flags and compasses. His son, Peter Christian Brennøe, took over the property and business in 1800. He lived there with his wife Olave F. C. Leth and five children until 1819. Their daughter Anna Brennøe /later Anna Nielsen) became a successful actress and  opera singer.  Peter Berg, who took over the business, owned the house for more than forty years. The architect Johan Daniel Herholdt lived in the building from 1847 to 1853.
Carl Mahnfeldt, a cooper, took over the building in 1852 and founded a company on 2 December that same year. In 1873, he passed the company on to his son Home Ernst Johan Sophus Mahnfeldt who renamed the company to E. Mahnfeldt. He died in 1880 just 39 years old and his widow then ran the company under the name E. Mahnfeldt's Enke (E. Mahnfeldt's Widow) until 1914 when she passed it on to their son Ernst Emil Johan Sophus Mahnfeldt. He died in 1936 and his widow Gerda Mahnfeldt  then ran the company until 1942 when she passed it on to their son Erik E. Mahnfeldt. He moved the company to new premises at Strandlodsvej 11 on Amager but it continued to own the property at Nyhavn 65 at least until 1950.
Mahnfeldt House