DÃ 1\/4 rer wanted to meet Martin Schongauer , the best engraver of Northern Europe , but Schongauer died shortly before DÃ 1\/4 rer 's arrival . He left in 1490 , possibly to work under Martin Schongauer , the leading engraver of Northern Europe , but who died shortly before DÃ 1\/4 rer 's arrival at Colmar in 1492 . It is unclear where DÃ 1\/4 rer traveled in the intervening period , though it is likely that he went to Frankfurt and the Netherlands .