Although my family name is now BLINKHORN this spelling dates from about 1851. Prior to this the family had been living in Swaledale, North Yorkshire using the spelling BLENKIRON and before 1724 BLENKHORN or BLENK. In 1821 John BLENKIRON, a widower with three young sons, moved into Lancashire seeking employment in the new coalfields that were opening up as the Industrial Revolution gathered pace. For a short period the family were called BLINKIRON but when two male grandchildren were baptised in 1834 the spelling BLINKHORN was used and this gradually superceeded BLINKIRON. By the end of 1851 the tranformation was complete.
The original posting which started this line of discussion was mention of a data bank including the BLINKORNS of Heaton and Halliwell in the Lancashire Parish of Deane. This line of BLINKHORNS contribute perhaps some 20% of the number of people who can be shown to be decended from Barthram BLENKHORN through the male line.