Complex sentence: Prince John became a very important sire for Maxwell Gluck's Elmendorf Farm and in 1961 Leslie Combs II purchased an interest in him and he was sent to stand at Comb's Spendthrift Farm in Lexington, Kentucky.
Split into simpler sentences: Prince John became a very important sire for Maxwell Gluck's Elmendorf Farm. In 1961, Leslie Combs II purchased an interest in him, and he was sent to stand at Combs' Spendthrift Farm in Lexington, Kentucky.