John Arundell (died 1580) of Trerice, eldest son by his father's second marriage, a Member of Parliament for Mitchell, Cornwall, in 1555 and 1558, and was High Sheriff of Cornwall in 1573–1574. Although his tenure of the Arundell estates was not fully secure due to the ongoing legal dispute with his half-nephew John V Arundell (died 1613) of Gwarnick, he built the present mansion house at Trerice in about 1572, which date appears above the plaster strapwork overmantel in the great hall. He married twice: