Vito's grandchildren

Whatever happened to Vito's grandchildren:
Vincent, s/o Sonny
Connie's sons (Michael mentioned them when she wanted to remarry)
Sonny's children by his wife: the twin daughters and young son (shown when the wedding photo was taken), and infant his wife was holding in the original movie while standing in the kitchen after Vito was shot?
Michael's son, Anthony
Tom's son, Andrew
A sequel could be derived to include these individuals and their adult lives.

ANYBODY WHO CAN ANSWER THIS TO ME Y WOULD BE REALLY GLAD. PLEASE.

IN GODFATHER PART III, THERE IS A MOMENTO WHEN CONNIE IS TALKING TO MICHAEL, AND SHE SAIS TO HIM: "Michael, you know, sometimes I think of poor Fredo, drowned. It was God's will. It was a terrible accident. But it's finished"

QUESTION: DID SHE REALLY DIDNT KNOW WHAT HAPPENDED WITH FREDDO, OR SHE IS TELLING MICHAEL THIS ON PORPOUS, LIKE FORGIVING HIM.

I HAVE THIS DOUBT FOR MANY YEAR, I WOULD LIKE ANOTHER OPINION.
THANK YOU ALL.

well i havent seen it for a while but im guessing she thinks he drowned but it could go either way

I think Connie didn't know what really happened, because If she did I believe she wouldn't forgive Michael.
That's just a guess

I used to feel that Connie didn't know what happened to Fredo.

But taking into account her statement about Fredo's death in context with what Michael has just told her - that he has confessed his sins to the Cardinal - this would imply that she DID at some point realize what happened and over the years has accepted and forgiven Michael.

"I love you Michael. I'll always help you."

Apple

First of all, Vito's grandchildren has been mentioned and has also been capshot in the movies. It's not significant but it's fun to know for us, voyeurs.

I would think that Sonny has 4 children and 1 bastard, which is Vincent. I say this because in part I, he has a son named Frank who read the 'get well soon' card to vito. Then there's the twins and a small baby that his wife held when Sonny received the phone call from Solozzo.

As for Connie, I would think that she has more than 1 children, because Michael mentioned about her eldest boy being caught for theft in Reno in part II.

These are just my opinions.