The subject of this biography may have been descended from the Robert Kelby who sat for Grimsby in the Parliament of 1330. It is, moreover, possible that he was related to the influential Kelby family of Lincoln, whose members included Walter Kelby, an MP, mayor of the Lincoln Staple and sometime escheator of Lincolnshire.
It is now impossible to establish exactly what happened at the Bartholomew fair held in Grimsby in 1398, but our Member, a kinsman of his named Richard Kelby and one Thomas Fyssher were accused by the mayor, Geoffrey Askeby, of holding him captive in his house, preventing him from exercising his office, and even threatening to murder him. In January 1399, Richard Kelby, the alleged ringleader, was committed to prison and then released on bail, while his mainpernors, John Kelby and Fyssher, were themselves bound over to keep the peace. An inquiry took place into the affair just before the following Easter, when Askeby’s charges were found to be without substance. A writ of supersedeas was subsequently issued in favour of the three accused, who faced no further proceedings on this score. In about 1402 Kelby sat on a jury in Grimsby for the assessment of taxes. He was returned to Parliament for the fourth and last time in 1406 and is not mentioned after that date.
