Before inheriting the earldom, he sat in the House of Commons as Conservative Member of Parliament for Oxfordshire from 1837 until 1841.

From his father's first marriage, he had several half-sisters, Lady Ellen Catherine Parker (who married Col. John William Fane, MP for Oxfordshire),[2] Lady Amelia Parker (who married William Montgomery, a grandson of the 1st Viscount Bangor),[3] and Lady Matilda Anne Parker (who married Arthur Hill Montgomery of Tyrells, County Down).

[2] From his parent's marriage, he had two sisters, Lady Lavinia Agnes Parker (who married the Hon.

John Thomas Dutton of Hinton House, Alresford, son of the 2nd Baron Sherborne),[2] and Lady Laura Cecilia Parker (who married Hugh Seymour McDonnell, 4th Earl of Antrim).

As his eldest son predeceased him, the earldom passed to his grandson George Loveden Parker.