|Relationships||Father: Arthur Acheson, 1st Earl of Gosford (c.1744-1807)|
Mother: Millicent Pole (d.1825), daughter of Lieutenant-General Edward Pole
Spouse: Brigadier General Robert Bernard Sparrow (1773-1805), son of Robert Sparrow (1741–1822) of Worlingham, Suffolk and Mary Bernard, sister to the 5th Baronet Bernard of Huntingdon
Children: Millicent Sparrow (1798-1848) m. George Montagu, 6th Duke of Manchester
Robert Acheson Bernard St. John Sparrow (1800-1818)
One further child died in infancy.