If you click on WikiTree profile: John Richardson, and read the Biography about immigration from Scotland, the following may have some validity, otherwise, the following would be inaccurate as to the names of his parents:
https://familysearch.org/ark:/61903/1:1:XYYB-2QX
The cemetery indicates a triple marker at a Logan Richardson's grave site and the birth day is identical.
Richardson, Logan 4-23-1856 9-9-1943 Triple Marker
He is said to have been born 23 April 1856, but the John Richardson who was born in Scotland is shown to have been born 29 April 1856.