As its name suggests, this MP’s family came originally from Louth in Lincolnshire, although his ancestors had been living in Hertfordshire from the early 14th century onwards, and were notable figures in the county. His father, Robert Louthe the elder, was twice returned as a shire knight and also sat on the local bench; his chief distinction, however, lay in his success at court in the service of Queen Isabella, who made him keeper of Hertford castle and surveyor of much of the surrounding countryside. He subsequently held this post under John of Gaunt, thus establishing a connexion with the house of Lancaster which was at first maintained by the subject of this biography.
His position as a local landowner notwithstanding, Louthe seems to have taken very little interest in administrative affairs, and the pattern of his career is therefore often hard to trace. The first known reference to him in this context occurs at Michaelmas 1401, when the annuity of ten marks which he expected to receive from the Sussex estates of the duchy of Lancaster was cancelled ‘because he did not accompany the King on his last journey to Wales and Scotland’. His reluctance to undertake any type of official or military commitment was not overcome until 1417, when he attended the Hertfordshire parliamentary elections. His own return, to the Parliament of May 1421, seems rather surprising in view of his previous unwillingness to shoulder any of the burden of local government, although he did play an active part in the elections of 1421 (Dec.), 1423, 1425, 1426 and 1427, as well as serving on at least one royal commission of inquiry.
