I feel like the Jane Austen novel doesn't need an additional hint. But that might just be because I'm very, very cultivated. I've read everything based on Gwyneth Paltrow's life.
It's one of the 100 most popular girls' names in the UK, I believe it's popular in the USA as well, and it must have been popular in the 90s because I've known a few Emmas
Additionally to what brandybuck96 already said, it's common in a lot of european languages: You see it in Britain, France, Sweden, Poland, Spain etc. In Gemany, it was the most common girls' name just a few years ago.
It's been in the top 5 baby names for girls in the US every year since 2002, and in all but 4 of those years it was either number 1 or number 2. So... yeah, it's pretty popular. Check it yourself on the Social Security website.
https://www.thenamegeek.com/first-name/emma