Question about names (adoption)

[AInightingale]

Has anyone ever looked for the family of a person who was adopted years ago, under the 'closed' adoption system, and discovered that the child retained the forenames they were given by the birth parents/family? Or was the adoptive couple very strongly encouraged to change the name given at birth, to minimise the chances of the birth family tracing the child? I ask because the person has two Christian names which were very significant within the birth family, but also within the adoptive one. They aren't very common names (i.e. John/James/William) but not wildly unusual either. Is this just a coincidence, or could he have retained his birth names?

My dads name at birth was also nicer in my opinion they had originally added an extra name in front of his birth name at baptism then a complete name change when legally adopted I think it would have been nicer to keep the name his mother gave him. ( we found out many years later his birth mother believed it was kept as a middle name she named my dad in her will)

In the past it was usual to change the names

I was born in 1970 and adoptive parents gave me a new first name but kept my birth mother's choice as my middle name.