The initials LDN, put after a person's name, generally stand for Licensed Dietitian/Nutritionist.
Licensed Dietitian Nutritionist
Low Dose Naltrexone
It is the initials of the ring makers name
N.kamalesh
Royal academician.
professional engineer
Certified Health Coach
Doctor of Medical Dentistry
It is the initials of the ring makers name
Not finding titular initials "PA;" prolly they mean Pennsylvania.
JS means your initials of your name and your wife name.
LDN the way you say London when you text people