Ranunculus ficaria?

Here is a link that might be useful: Ranunculus ficaria

Very likely. Somebody saw the leaves and misidentified it.

Yep. That looks like the flower. Thank you!

Consider whether you want to keep this. It is a very persistant plant which spreads by the tiny bulbils and seed. It is extremely difficult to get rid of once established. The leaves grow in early spring and can smother other plants. They die down in summer but never fear, they will be back.