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erected on the lot was completed, he moved into temporary offices. Two marine lots were bought in 1858 in Sai Ying Pun on which extensive godowns (ware-houses) were built (Hong Kong Land Office, Memorial 1477, 21 Sept. 1858). He soon after left Hong Kong to assume management of the firm's affairs in Hamburg. There he married in 1859 a Miss Wagner (North China Herald 6 Aug. 1859). He continued to reside at Hamburg until his death on 24 November 1886 aged seventy-one (DP 6 Dec. 1886).
When Mr. Siemssen left Hong Kong his partners were Ludwig Wiese and Woldemar Nissen (FC 31 Mar. 1855). Mr. Wiese was a Norwegian by birth but subsequently became a naturalized British citizen. From 1849 to 1855 he had been an assistant in the office of Carlowitz, Harkort and Co. at Canton. At various times he served as Consul for Hamburg, Lubeck, Sweden and Norway and was acting Consul for Prussia and Austria. His connection with Siemssen and Co. ended in 1863 (CM 5 Jan. 1865). He located in London, where in 1871 he joined the Board of the Chartered Bank of India, Australia and China (CM 24 July 1871). Though no longer a partner he represented the interests of Siemssen and Co. in England. He died in England on 22 March 1887 (GG, Probate Calendar 4 July 1887). His widow Joanna died in the City of Westminster on 10 May 1904 (GG, Probate Calendar 25 Apr. 1906).
Agathon Friedrich Woldemar Nissen — usually known as Woldemar — was a partner from 1855 until his death in Hamburg on 28 December 1896 (DP 7 June 1897). He was a member of the Provisional Committee for the organisation of the Hongkong and Shanghai Banking Corporation in 1864. He was Deputy Chairman of the Board in 1866 and Chairman in 1867. He left Hong Kong in October 1867 (CM 31 Oct. 1867). In Hong Kong he was Consul for the Hansa Towns of Bremen, Hamburg and Lubeck as well as for Sweden and Norway.
The business of the firm increased rapidly. New branches were opened and new partners admitted. Rudolph Heinsen was transferred from the Canton office to Shanghai to open a new branch there in January 1856 (FC 1 Jan. 1856). He later became a partner and his interest in the company ended in 1868 (GG 9 Jan. 1869). George Wilhelm Schwemann was the managing partner at Foochow in 1861. Friedrich Adolph Joost was a partner from 1864 to 1873 (CM 1 Jan. 1864, Daily Press 28 Jan. 1874). When Messrs. Schwemann and Heinsen retired from the firm in 1868, they were replaced by Ferdinand Nissen and Heinrich Hoppius (GG 9 Jan. 1869).