Hi Ellenmai,
Have gone back to 1683 for John Henry's ancestors, John Parry and Lowry Williams, who married in Lansannan, Denbighshire. If it is no trouble, how far back have the Ancestry family trees gone - names if possible!
As for JHR marriage - his wife was NOT a Hughes, she was a Williams from her mother (Ann Williams nee Thomas) who married a Griffith Williams in 1845. Hughes was the name of her second husband. JHR and Ann/Annie (who was pregnant) married, according to family history, "well away from prying eyes" in a civil ceremony in Bangor/Bethesda