Colin Campbell of Ardmaddie, a son of John Campbell, 1st Earl of Breadalbane and Holland by his second marriage to the former Mary Sinclair, Countess of Caithness (née Lady Mary Campbell), the widow of George Sinclair, 6th Earl of Caithness who was a daughter of Archibald Campbell, 1st Marquess of Argyll).

[2] In 1796 he went to Ireland and two years later fought at the Battle of Vinegar Hill.

[2] During the Peninsular War he insisted on keeping Gibraltar well garrisoned and also regarded Tarifa as within his command and denied it to the French invading force there.

[10] Through his son William, he was a grandfather of Mary Caroline Campbell (1820–1876), who married Andrés Avelino de Silva y Fernández de Córdoba (younger son of the 12th Duke of Híjar.

Mary and William were the parents of Alfonso de Silva y Campbell, 15th Duke of Híjar.