Boteler’s origins are obscure. He owed his early advancement to his apprenticeship under William Askham†, during Henry IV’s reign one of the most prominent fishmongers in the city of London. He was probably still serving his apprenticeship in November 1413 when Askham made his will (bequeathing to Boteler the substantial sum of £60). Furthermore, Boteler, who was named his late master’s principal executor, was assigned Askham’s great tenement in Thames Street, just above London Bridge. In 1432, Boteler sold this property for 800 marks to John Cornwall, Lord Fanhope, and the Fishmongers’ Company, on which the remainder after Fanhope’s death was settled. The Fishmongers later built their hall on the site.
By 1423, Boteler had gained admission to the livery, and that September he was appointed as one of the four auditors of the City. A month later, he was chosen one of the two representatives of the commoners of the city to attend the Parliament summoned to meet at Westminster on 20 Oct.
The reason for this notable lack of advancement in London was Boteler’s marriage, which caused his departure from civic society. It is probable that Thomas had forged the connexions that brought it about in the Askham household, for his wife, Maud Sackville, the daughter of a Buckinghamshire knight, had previously been the wife of Nicholas Kentwood, member of a family into which both of Askham’s daughters had married. The match was a profitable one, and established Boteler in home county society. At the time of Maud’s first marriage, her father had settled on her and her husband two of his manors, Crafton (in Wing) and Burston (in Aston Abbots), and these she now brought to Boteler.
As the entails that governed Maud Sackville’s property meant that after her death they would revert either to her children by Kentwood or to her Sackville relatives, Boteler set about acquiring holdings that might in time pass to his own offspring. To this intent, he purchased the Buckinghamshire manor of Pitstone and other property at Cheddington and Wingrave in the same county, and Redbourne, Tiscot (in Tring) and Albury in Hertfordshire from one Thomas Palmer.
Boteler now began to play his part in county society: between 1427 and 1433 he was regularly present at the parliamentary elections in the Buckinghamshire county court and set his seal to the sheriff’s indenture. In the disputed election of 1429 he supported the return of John Hampden II* and Andrew Sperlyng*, but no further details of his involvement, if any, in the incident are known.
Boteler is last heard of in August 1454,
