Complex sentence: In 1981 Campbell gave Canna to the National Trust for Scotland, but he continued to live on the island, and his widow remained at Canna House until her death in 2004 at the age of 101.
Split into simpler sentences: In 1981 Campbell gave Canna to the National Trust for Scotland, but he continued to live on the island. His widow remained at Canna House until her death in 2004 at the age of 101.