Note:
(a) The German (Bavarian) surname Schwerdt means "a sword maker, from Middle High German swert sword."
(b) The southern German surname Scharf is "from Middle High German scharf, scharpf sharp-cutting."
(c) About Us. MSI Professional Services International, undated http://msips.org/en_GB/our-history/
("MSI Professional Services International (formerly Medical Services International) is a Christian non-profit charitable organization founded by Dr James Hudson Taylor III, Dr Reginald Tsang and Mr Richard Chen in 1994 to provide development assistance to China. The change of name in 2001 reflected our increasing scope of work from medical services to include community development, English education, business administration and management training, youth work, and livestock projects")
國際專業服務機構有限公司 (總部: 九龍)
(d) The few articles about the doctor are written in German, so I do not even know his wife's name (possibly Judith).