Pieter Jacobsz Olycan

He was a merchant in oils and grains in Amsterdam with a warehouse called "In den Olycan", which became his name.

He was also a brewer in Haarlem on the Spaarne river with a large brewery called the "Vogelstruys".

[1] Pieter Olycan was one of three brewers from Haarlem who sold his “Vogelstruys” beer from a 'bierstekerij' on the Bierkade in Purmerend.

[2] He married Maritje Claesdr Voogt and through her he became the brother-in-law to two more brewers of Haarlem.

He was portrayed by Hendrik Gerritsz Pot in his group portrait of the St Adrian Civic Guard in 1630.

Pieter Jacobsz Olycan, by Frans Hals
Previously assumed to be a copy of the 3/4 length portrait, this smaller panel by Frans Hals is now considered to predate it by 5 years or so.