British Cast Iron Belly Pot/Cauldron

Hello, I am trying to see if I can find some more information out about this cast iron belly pot/cauldron in my family. I know it is from Ireland, at least from before the 1960s. However, I have seen some listings for similar "duck" labelled cauldrons on Ebay which say it belongs to a British brand (but they never state which one). I am trying to see if anyone would know which brand this duck image (seen below) is the maker's mark for. The underside of the pot looks like it has a sprue on it (potentially making it an 18th century item), but I am not very familiar with cast iron so I'm not sure if I'm misunderstanding what a sprue is supposed to look like. There is no gate mark and the legs are approximately 1.5 inches long.











Thank you for your help! Any information you have would be greatly appreciated.

 

Have you tried doing a rubbing to see if any of the letters stand out under the duck.

 

There's a good British website called oldcopper.org which has a fair few marks. Have a gander, if you'll pardon the pun.