When writing thank you cards....

La

I'm writing thank you cards to the people who provided our family with food or help after I lost my father.

I don't know how to sign them. Assuming my maiden name is "Davis" and my married name is "Rosen" (it's not).

Should I sign the cards "the Davis and Rosen families?" Or just "the Davis family?"

Should I sign it from just myself? Or should I put my mom and brother's names in there?

Is it rude to just sign it from myself?