need help on invite wording!!

Hey ladies! Enjoying the snow? I work from home, so I have no excuse not to be working, but I'm working on wedding stuff instead... So FI thinks our invite wording is weird and we need your opinions! Thanks so much! This is what I came up with:

Because you have shared in their lives
through your friendship and love,

brides parents
and
grooms parents

Invite you to share in the celebration
of the marriage of their children

Farah
and
Robert Brian

blah, blah, blah....

Rob thinks 'of the marriage of their children' sounds weird - he says that 2 'of's in a row sound bad. Opinions? any english teachers out there? Thanks again!

Thank you! I was trying to remember the name of the site (verseit) while I was working on this. I even did a search, but couldn't find it. I really appreciate it!

I see his point with the 2 ofs as well, but I don't know of a better way to phrase it and it didn't seem that awkward to me.