 The Edwardes family owned extensive lands in Pembrokeshire, Carmarthenshire and Cardiganshire in Wales.He was elected as a Member of Parliament for Haverfordwest in 1722, which seat he held until 1725.He married Lady Elizabeth Rich, only daughter of Robert Rich, 5th Earl of Warwick, 2nd Earl of Holland (1620–1675) and the heiress of her nephew Edward Henry Rich, 7th Earl of Warwick, 4th Earl of Holland (1697–1721).