In 1641 John Fenwick 1st Baronet (age 71) was elected MP Cockermouth.

In 1659 Wilfrid Lawson (age 23) was elected MP Cockermouth. He was re-elected in 1660.

In 1661 Wilfrid Lawson 1st Baronet (age 51) was elected MP Cockermouth.

In 1689 Henry Fletcher 3rd Baronet (age 27) was elected MP Cockermouth which seat he held until 1690.

In 1690 Wilfrid Lawson 2nd Baronet (age 25) was elected MP Cockermouth which seat he held until 1695.

In 1698 George Fletcher (age 32) was elected MP Cockermouth which seat he held until 1701.

In Feb 1702 Thomas Lamplugh (age 45) was elected MP Cockermouth at a by-election.

In 1705 Thomas Lamplugh (age 48) was elected MP Cockermouth at a by-election.

In 1717 Wilfrid Lawson 3rd Baronet (age 20) stood for the Cockermouth constituency after Nicholas Lechmere accepted a ministerial position and accordingly resigned the seat. However, the returning officer made a double return, returning both Lord Percy Seymour (age 20) and Sir Wilfrid Lawson. Both parties immediately petitioned against the result; Lord Percy, on the grounds that Lawson was a minor, (not having attained the age of 21), while Lawson based his petition on the grounds of bribery. Although both petitions were withdrawn, Sir Wilfrid did admit the charge and consequently, Lord Percy took the seat.

In 1722 Wilfrid Lawson 3rd Baronet (age 25) was elected MP Cockermouth which seat he held until his death in 1737.

In 1754 Percy Wyndham O'Brien 1st Earl Thomond (age 41) was elected MP Cockermouth.

In 1800 Walter Spencer-Stanhope (age 49) was elected MP Cockermouth.

In 1818 John Beckett 2nd Baronet (age 42) was elected MP Cockermouth which seat he held until 1821.

In 1830 Philip Pleydell-Bouverie (age 41) was elected MP Cockermouth.

In 1886 Wilfrid Lawson 2nd Baronet (age 56) was elected MP Cockermouth which seat he held until 1900.