In Oct 1553 Francis Morgan (age 42) was elected MP Northampton.

In Apr 1554 Francis Morgan (age 43) was elected MP Northampton.

In 1597 Henry Yelverton (age 30) was elected MP Northampton. He was elected again in 1604 and 1614.

In Aug 1727 George Compton 6th Earl of Northampton (age 35) was elected MP Northampton.

On 13 Apr 1744 George Montagu (age 31) was elected MP Northampton which seat he held unti 1754.

In 1761 Spencer Compton 8th Earl of Northampton (age 22) was elected MP Northampton.

In 1780 George Rodney 2nd Baron Rodney (age 26) was elected MP Northampton.

In 1782 Charles Bingham 1st Earl Lucan (age 46) was elected MP Northampton.

In 1830 George Robinson 5th Baronet was elected MP Northampton which seat he held until 1832.

In 1831 Robert Smith aka (age 30) was elected MP Northampton which seat he held until 1859.