help! invitation wording

Help! I can find no examples of how I should word my invitations -- here's the situation: Hosting - my mom and step-dad AND grooms parents.

I also want to include my deceased father's name (my last name is still his last name), my mom remarried.

Any suggestions?? I want to follow good etiquette and not be sad either...

Thanks!

Bella Figura has a section on their web site with all different wordings for different situations.

Here's a link that may help:

[Bella Figura