Why did Richard III marry Anne Neville?

Richard III married Anne Neville primarily to secure her share of the immense Warwick inheritance.1

There is no historical evidence to suggest that the union was a love match. Instead, the marriage was a strategic move that allowed Richard to claim a significant portion of the Neville family's estates, which were located largely in Wales and northern England. Richard engaged in a bitter dispute over these lands with his brother, George, Duke of Clarence, who had married Anne’s elder sister. Ultimately, the three royal brothers colluded to deprive the Countess of Warwick of her entitlements, ensuring that Richard gained control of vast territories that would later serve as his power base as king.1

While William Shakespeare’s play Richard III depicts the marriage as a calculated seduction, historical records emphasize the pragmatic, economic, and political motivations behind the alliance.12