As the younger son of a minor Elizabethan courtier, Bromfeild seems to have had no formal education, and inherited a patrimony of only £6 13s. 4d. a year.
Southampton, as captain of the Isle of Wight, had Bromfeild returned for Yarmouth to the first three Stuart parliaments, but Bromfeild made no impact upon the parliamentary records. In around 1605 he leased part of the grounds of Somerset House for the erection of a tennis court, at the cost of £200.
Perhaps as a result of the failure of the ironworks venture Bromfeild seems to have lost favour with the earl of Southampton, who declined to nominate him to the next Parliament and evicted him from St. Margaret’s.
In 1635 Bromfeild secured exemption for life from the shrievalty, and in the following year he brought an action against his son-in-law William Beeston*, the earl of Southampton, and his erstwhile colleague Thomas Risley* over the ironworks.
