I believe it is true. There's a headcanon that Lily got James to agree that Snape would be godfather as well.

While they planned to have more children, Lily was not canonically pregnant at the time of her death.

@Heheidkwhy I read that too, about Snape maybe being godfather of the second kid.

It was fanon that got spread around as truth.

If you see a dubious claim with the words "JK Rowling said..." but no actual source, don't trust it without double-checking first

I guess so.

If it was that’d be super sad

@CHT64

That is exactly why I asked here 😁

Also, I didn't look for a source or anything, it was one of those 'Fun Fact' memes you'll find on the internet that are 'real' or whatever.