Hendrik Swalmius  Hendrik Swalmius (1577 – 1649), was a Dutch theologian known today for his portrait by Frans Hals. He was born in Rhoon as the son of Hendrick van de Swalme, or Henricus Swalmius, who was probably born in Flanders and spent time in England before becoming preacher in Rhoon in 1580. It was in Rhoon that he changed his name from Swalme to Swalmius. Swalmius the Elder had 4 sons:  In 1650 an engraving based on the Hals portrait of Hendrick was made by Suyderhoef stating he was a preacher in Rhoon. After his wife died he remarried in Haarlem in 1640 to IJfje Willems van Weert. He died in Haarlem in 1649.