The Lannarghs were an ancient family from western Cornwall who by the mid fourteenth century held property in the manor and borough of Helston-in-Kirrier, and who had provided parliamentary representatives for the borough in 1328, 1344 and 1348.
When acting as a witness to the proof of age of John Trenewith* in September 1449 John Lannargh was thought to be aged 46 years and more, but he may in fact have been somewhat older, if it was he, rather than a namesake, who attested a property deed at Helston in November 1413.
Little else is known of Lannargh’s career. In February 1435 he had witnessed a land settlement by Thomas Trewoofe, perhaps a distant kinsman, and in September 1446 he attested a certificate of the homage done by William Gurlyn to Ralph Reskymer.
