Complex sentence: In later life he developed an interest in horse racing and was a part-owner of Motivator, the 2005 Derby winner and died at the Cumberland Infirmary in Carlisle on the 23rd May 2006.
Split into simpler sentences: In later life he developed an interest in horse racing and was a part-owner of Motivator, the 2005 Derby winner. Lord Lonsdale died at the Cumberland Infirmary in Carlisle on 23 May 2006.