Virtually nothing has hitherto been known about Werner van dell Valckert's life and little about his work, his reputation resting mainly on his portrait historié of 1620 and a number of official Amsterdam group portraits of between 1622 and 1627, as well as a number of etcltirtgs of 1612. The present study has still not yielded the dates of his birth and death, but it has revealed that his career began in The Hague, where he was married to Jannetje Cornelis, daughter of the Hague glass-painter Cornelis Sybertsz. Monicx van Montfoort (Note 9), in 1605. He was registered as a master in the Guild of St. Luke there at some point between 1600 and 1605 and may have been born in or near the city around 1580-5. He is recorded in The Hague for the last time in 1612, so he probably moved in 1613 to Amsterdam, where his daughter was christened on 10 August 1614, followed by three more children over the following five years. The last record of him in Amsterdam is in 1627, so he probably died in that year or shortly afterwards. There is no evidence whatever to support previous hypotheses of his having been a pupil of Goltzius and made visits to Italy and Denmark.