Montagu Edmund Parker (1737–1831) of Whiteway House, near Chudleigh and of Blagdon in the parish of Paignton, both in Devon, was Sheriff of Devon in 1789. Portraits of him by Sir Joshua Reynolds (educated at Plympton Grammar School and a friend of the Parker family) and John Downman survive at Saltram House.
He was born in 1737, the 3rd son of John Parker (1703–1768) of Boringdon Hall, Plympton, of Saltram House, Plympton and of Court House North Molton, all in Devon, by his wife Catherine Poulett (1706-1758), whom he married in 1725, a daughter of John Poulett, 1st Earl Poulett by his wife Bridget Bertie, a granddaughter of Montagu Bertie, 2nd Earl of Lindsey. His elder brother was John Parker, 1st Baron Boringdon (1735-1788) of Saltram, whose son was John Parker, 1st Earl of Morley (1772-1840). The Parker family had risen to prominence in the mid-16th century as the bailiff of the manor of North Molton, Devon, under Baron Zouche of Haryngworth.
He served as Sheriff of Devon in 1789. He inherited various of his father's secondary estates including Blagdon, Paignton and adjoining Collaton Kirkham (now Collaton St Mary), which his father had inherited from his younger brother Francis Parker of Blagdon. The public house in Collaton St Mary is called the "Parkers Arms" (sic) after his tenure.