The migration of the original Norman family throughout the world has created over 60 different ways the name has been spelled. The following is a small selected list of examples:

READLAN, REDLAN, RHUDDLAN, RIDAL, RIDALE, RIDDALL, RIDDEL, RIDDELL, RIDDELLE, RIDDELS, RIDDLE, RIDDLETON, RIDDLEY, RIDEL, RIDELEIGH, RIDELL, RIDEY, RIDLAND, RIDLE, RIDLER, RIDLEY, RIDLON, RILLY, RUDDELL, RUDDLE, RUGDAL, RYDDLAND, RYDLEY, RYEDALE