The print source for the depiction of Samson killing the lion (Book of Judges 14:6) is probably the engraving by Philips Galle (Antwerp, 1537-1612), after Maerten van Heemskerck (1498-1574), from the series entitled 'The Story of Samson'. An example of the print and others from the series is in the British Museum, London, no. 1949,0709.59.
A jug of the same form, attributed to Frankfurt, and painted with the same subject, possibly by the same hand, is illustrated by Helmut Bosch, Deutsche Fayencekrüge des 17. und 18. Jahrhunderts, Mainz am Rhein, 1983, p. 120, no. J47.