Complex sentence: For Thanksgiving 1988, his family spent the holiday with him, although he had developed neuropathy and was increasingly bed-ridden and reliant on morphine; he died in his bed on December 16,1988 at the age of 41.
Split into simpler sentences: For Thanksgiving 1988, his family spent the holiday with him. By which time he was increasingly bed-ridden and reliant on morphine; he died in his bed on December 16,1988 at the age of 41.