The Scottish migration was particularly concentrated in Sweden and Poland. At one point some 30000 Scots were estimated to be resident in the Kingdom of Poland. There was a particular concentration in the city of Gdansk(Danzig) in Poland which has areas in it known as Old and New Scotland. Though usually welcomed in Poland Scots were often criticised for their drunkenness and sheer numbers. Successful merchants such as Robert Gordon and William Forbes made hugh fortunes in Danzig which were reinvested back in Scotland. The latter being known in Scotland as ‘Danzig Wiilie’. Gdansk even recruited a regiment of Scottish mercenary soldiers to defend it. As in previous eras many new ideas and techniques came back to Scotland along with the trade in such items as wood and grain.