When I was in hospital having had ds3 the doctor was filling in paperwork for the baby opposite. He asked the mum the child's name and then asked her how it was spelled to which she replied "Eeeeee I divvn't really na, have a look in them cards coz they've got his name in 'm. He's named after the footballer" Surely you should at least know how to spell the name you are giving your child
YANBU in hoping that someone advises them of the correct spelling, if they were discussing it it sounds as if they really didn't know and weren't simply joining the ranks of parents naming their children everyday names but spelled bizarrely unusually