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He became active as an art dealer , probably aided by his appointment as headman of the confrerie , where he also gave lessons , though only his son Willem Johan van Haensbergen ( 1680-1755 ) , born after his second marriage to Sophia van der Snouck in 1679 , is listed as his pupil .
 van Haensbergen, van
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 van Haensbergen, van