A surprisingly obscure figure, Wenlock was the eldest son of a Shropshire man who had settled in Bedfordshire. From his father, who probably died soon after 1415,
In October 1415, having crossed the Channel on Henry V’s first expedition to France, Wenlock fought at Agincourt, where he and William Ludsopp* took several prisoners.
It is likely that Wenlock’s own military career ended at Meaux, since he sat for Bedfordshire in the first four Parliaments of Henry VI’s reign and is not known to have returned to France after the dissolution of the last of these assemblies in June 1426. Although he had spent much of the previous seven years abroad and never played any part in the administration of his home county, he must have benefited from the support of his patron each time he stood for Parliament, not least in 1422 when Cornwall headed the list of attestors. Wenlock again stood surety for his master while a Member of the following Parliament, for he was one of Cornwall’s mainpernors when Sir John received a royal grant relating to the inheritance of the young John Arundel in December 1423.
