Early travel difficult,horse and wagon went abt 10 miles an hour in a straight line,
But at that time dirt roads twisted and turned,not well manetained,might
have to go 15 miles to go 10 in a straight lines,Not sure if railroads were in use then
Leicestershire to kent ,iwould guess about 100 miles.
In 1851 Census John MacKellow age 15 born abt 1836, Father John MacKellow
Mother Ann MacKellow,Tonbridge,Kent England.So here is one born in Kent.