With applique, many quilters create our own designs & templates. They look to be from the late 40's/early 50's. The last one is a variation on a Sunbonnet Sue (who was introduced in the 30's & continues to have a following even today) but I haven't seen that variation before. I haven't heard of a particular name of the first one. I've always just seen it called a 6-petal flower (she double layered it). Here's a link to a vintage repro pattern (
http://www.ebay.com/itm/Vintage-Quil...-/171010627002).
I'm not sure about the middle one. It's very clever how it looks like a flower inside a snowflake. I hope you can find out more about its history. How wonderful that you have preserved such sweet & beautiful links to your family's history.