Earl F. Brosnahan Jr., 89, had been in failing health and he was also "heartbroken over the recent death of his beloved daughter," the Brosnahan family said in a statement.
Brosnahan, known to his family and friends as Frank, died on Wednesday night at his home in Kansas City, Missouri. His family did not specify the cause of death.
Kate Spade, 55, one of his six children, was found in her New York City apartment on June 5.
Brosnahan worked in his family's construction business. He is survived by his wife Sandy, five children and eight grandchildren.
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