An artist, designer, choreographer and dancer, he was best known for writing a grudge-settling memoir about his formerly close bond with the pop star.

Christopher Ciccone, Who Dished About His Sister Madonna, Dies at 63

An artist, designer, choreographer and dancer, he was best known for writing a grudge-settling memoir about his formerly close bond with the pop star.

Christopher Ciccone, who devoted himself to his older sister Madonna — living with her, warning her of impending arrest and directing her world tours of the early 1990s — but who later, after feeling cast aside, wrote a memoir chronicling experiences that he described as “abuse,” died on Friday. He was 63.

The cause was cancer, his representative, Brad Taylor, said in a statement. He did not specify where Mr. Ciccone died.

After years when it seemed the siblings shifted between chilly distance and bitter feuding, Madonna published a statement on social media Sunday that praised Mr. Ciccone, fondly recalled the years of their closeness and described a reconciliation before his death.

“We soared the highest heights together and floundered in the lowest lows,” she wrote. “Somehow, we always found each other again.”