[MozarkDawg]

Citing her Catholicism, she had said she would never marry again.

As far as I'm aware, there is nothing in Roman Catholic doctrine that disallows a widow from marrying again -- the sacrament is "Until death do us part." Confused on this one.

[bill1952]

The citation ascribed to her is here, but I suspect that it has more to do with a profound sense of personal loyalty than simply being Catholic:

http://en.wikipedia.org/wiki/Ethel_Skakel_Kennedy