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Jan Cock Blumhoff, or Blomhoff, was head of the [[Dutch East India Company]] factory at [[Nagasaki]] from [[1809]] to [[1823]].

Jan Cock Blumhoff, or Blomhoff, was head of the [[Dutch East India Company]] factory at [[Nagasaki]] from [[1809]] to [[1823]].

While in Japan, Blomhoff became an avid collector of [[tea ceremony|tea]] utensils. He also developed a relationship with a Japanese woman (likely a [[courtesans|prostitute]] from the [[Maruyama]] district) and had at least one child by her.

While in Japan, Blomhoff became an avid collector of [[tea ceremony|tea]] utensils. He also developed a relationship with a Japanese woman (a [[courtesans|prostitute]] from the [[Maruyama]] district named Itohagi) and had at least one child by her.

In [[1817]], he returned from [[Batavia]] to Nagasaki accompanied by his Dutch wife [[Titia Blumhoff]], their child's wet-nurse, and Titia's sister-in-law.<ref>Timon Screech, ''Obtaining Images'', University of Hawaii Press (2012), 348.</ref> These three women were quite likely the first non-East-Asian women to enter Japan in over 150 years, since the expulsion of a number of women in [[1661]]. Though the shogunate authorities refused the women permission to remain in Japan, there was not to be another Dutch ship for four or five months. During these few months, they attracted considerable attention, were visited by a number of ''[[Rangaku]]'' scholars and others, and were painted by [[Kawahara Keiga]] and [[Ishizaki Yushi|Ishizaki Yûshi]].

In [[1817]], he returned from [[Batavia]] to Nagasaki accompanied by his Dutch wife [[Titia Blumhoff]], their child's wet-nurse, and Titia's sister-in-law.<ref>Timon Screech, ''Obtaining Images'', University of Hawaii Press (2012), 348.</ref> These three women were quite likely the first non-East-Asian women to enter Japan in over 150 years, since the expulsion of a number of women in [[1661]]. Though the shogunate authorities refused the women permission to remain in Japan, there was not to be another Dutch ship for four or five months. During these few months, they attracted considerable attention, were visited by a number of ''[[Rangaku]]'' scholars and others, and were painted by [[Kawahara Keiga]] and [[Ishizaki Yushi|Ishizaki Yûshi]].