Donnington Castle was built in the late fourteenth century for Sir Richard Abberbury, a soldier, courtier, and diplomat connected with the Black Prince and Richard II. In 1386 Abberbury received a royal license to crenellate his residence. The resulting castle occupied a hill above routes through Berkshire and the town of Newbury. Its defenses, including a formidable twin-towered gatehouse, also served social display. Behind the walls stood timber-framed halls, chambers, kitchens, and service buildings arranged for an elite household rather than a large permanent garrison.

The estate passed through several prominent owners. Thomas Chaucer, son of the poet Geoffrey Chaucer, acquired Donnington, and his daughter Alice brought it into the de la Pole family, whose fortunes rose and fell during the Wars of the Roses. The Crown took possession in the early sixteenth century. Henry VIII granted it to Charles Brandon, duke of Suffolk, and royal visitors included Henry and his daughter Elizabeth. Later disputes involving Elizabeth Cooke Russell showed the castle’s continuing value as a residence and estate center even after its medieval defenses had become outdated.

The English Civil War transformed Donnington’s role. In 1643, after the First Battle of Newbury, Royalist troops occupied the castle. Colonel John Boys commanded a garrison of roughly two hundred men and strengthened the hill with earthworks capable of resisting artillery. Donnington protected communications between royalist Oxford and the west, and its position overlooked important roads. Parliamentary forces began a sustained blockade and bombardment in 1644. Boys rejected repeated demands to surrender, while the garrison endured shortages and damage.

Fighting around the castle became entangled with the Second Battle of Newbury in October 1644. The king’s army maneuvered nearby, and guns and supplies were temporarily secured under Donnington’s defenses. Although Parliament claimed the field, it did not immediately take the fortress. The siege continued until April 1646, when Boys surrendered on honorable terms after the Royalist cause had collapsed elsewhere. Parliament then ordered the castle demolished. Most domestic buildings and curtain walls were pulled down, but the massive gatehouse survived as a conspicuous monument to the resistance.

The ruin attracted antiquarian interest and became a landmark above Newbury. Earthworks still preserve evidence of the Civil War defenses around the medieval core, allowing the site’s two principal military phases to be read together. Donnington was protected as a scheduled monument in the twentieth century and later placed in state care, with repairs stabilizing the gatehouse and buried remains. Its history demonstrates how a prestigious but modest fortified house could be rapidly converted into an effective artillery position, then deliberately destroyed because wartime experience had proved the strategic value of its hill.