Can you summarize Catharine of Bourbon’s marriage-related history?

Both before and after his accession to the throne Catharine of Bourbon was on several occasions proposed as a bride for Edward IV of England. The marriage negotiations came to nothing, and Edward went on to astonish his own people, and the Courts of Europe, by marrying for love Elizabeth Woodville, the daughter of an obscure knight.

On 28 December 1463 in Bruges, she married Adolf II, Duke of Guelders, who succeeded his father Arnold as Duke of Guelders in 1465. Catharine and Adolf had twin children

Of course! Catherine of Bourbon was intended to be wed to Edward IV of England, but it never worked out. In 1463 she married Adolf II, Duke of Guelders and had two children.