im looking for the middle names of the 6 kids on the show and real life?

I 'm not really sure about their middle names on the show.
In real life their names are:
Greg- Barry William Blenkhorn
Peter - Christopher Anton Knight
Bobby- Michael Lookinland
Marcia- Maureen Denise Mc Cormick
Jan- Eve Plumb
Cindy-Susan Olsen

In case you are interested
Mike- John Robert Reitz
Carol- Florence Agnes Henderson
Alice- Ann Bradford Davis
hope that helps some.

I don't think the kids' middle names were ever mentioned on the show. I do remember that Cindys' given name was Cynthia though.