I found two theories regarding the "Gandhi" name in the Indira Gandhi family.
I haven't yet found credible sources for them. That is why I'm asking here.
The first is that
Mohan Das Gandhi adopted Feroz Gandhi the husband of Indira Gandhi
The second being that:
It was just a coincidence. Indira Gandhi's Husbands name happened to be "Feroz Gandhi" or "Feroz Gandhy" or "Feroz Ghandi".
Edit: Wikipedia says that "Firoz Ghandhy" changed his surname to "Feroz Gandhi"
If the second case is true please provide original spelling if possible.
If possible please suggest documents that I can obtain under Right to information to prove this.