Donnelly Group | 6,674 followers on LinkedIn. Northern Ireland's largest family owned motor retailer with nine showroom locations provincewide - established in 1947. | The Donnelly Group has been synonymous with the motor industry in Northern Ireland since 1947 when Peter Donnelly started a vehicle repair and taxi business in Caledon on the border of Co Tyrone and Armagh. Since then the Donnelly Group has become the largest family owned automotive company in Northern Ireland. With nine showrooms located across Northern Ireland, we can respond to the needs of our customers quicker and with more convenience than anyone else.