She was formerly married to Hollywood public relations mogul, Warren Cowan.

The cause was complications of pneumonia, his publicist, Warren Cowan, said yesterday.

The cause was complications from cancer, said a spokesman, Warren Cowan.

There were multiple causes, said his longtime publicist, Warren Cowan.

During this period of time Warren Cowan flew in, introduced himself to Principal, and offered to represent her free of charge for the next year.

Warren Cowan, 87, American publicist, cancer.

The cause was heart failure after complications from lupus, said his publicist, Warren Cowan.

The cause was vascular disease, his publicist, Warren Cowan, said.

Warren Cowan (March 13, 1921 - May 14, 2008) was a prominent American film industry publicist.

In 1994, after a two-year non-competitive period, he launched a new company, Warren Cowan & Associates, where he remained the creative center of his business.