Logically the impaled arms should be those of Schape for John Affleck's wife, but his parents were Thomas Affleck and Ann, daughter of Matthias Petersen of Ocland, Sweden, according to this website http://landedfamilies.blogspot.co.uk/2013/06/50-affleck-of-d...
Here's the entry in the 7th edition of Gentlemen of Coat Armour, A C Fox-Davies 1929 for Affleck of Dalham
The date of 1899 should be the date the arms were confirmed to another generation.
No image I'm afraid.
Fox-Davies does not mention the Dutch family I'm afraid, or the Swedish and the pedigree does not go back that far in this edition, the family are not mentioned at all in the 3rd edition.