The Warre family and its branches established in Somerset and Dorset are well documented. William’s contemporary, John Warre of Hestercombe in Somerset held lands in the two counties estimated in 1412 to be worth as much as £76 p.a.
By contrast, the MP for Lyme Regis is an obscure figure. The fact that John Warre was a member of the Dorset bench when William was returned to Parliament may reinforce the supposition that they were kinsmen, but precisely how they were related is not revealed. Nor is it known where William lived, although at one time he was a feoffee of land near Gillingham in the north of the county.
William accompanied John Warre to the shire court held at Ilchester on 4 Oct. 1423, where both men attested the indentures recording the election of the knights of the shire for Somerset in the Parliament summoned to meet on 20 Oct. Contrary to the statutes which stipulated that those participating in the elections should be resident in the shire concerned, a week later William attested the parliamentary indentures sealed at Dorchester. This was the occasion of his own return to the Commons for Lyme Regis, an impoverished and deserted borough with which he had no known connexion.
Henry V’s war in France had ended in 1420 with the treaty of Troyes, and accordingly Warre’s farm of the alien priory estates should then have ended, yet he and his kinsman Thomas had continued to collect the revenues of Sturminster Marshall; in Easter term 1429 they were summoned to the Exchequer to answer for sums still due to the Crown.
