Complex sentence: The poet Siegfried Sassoon spent the latter part of his life at Heytesbury House, which he purchased in 1933, and his son George Sassoon grew up there and inherited the house, which he eventually sold.
Split into simpler sentences: The poet Siegfried Sassoon spent the latter part of his life at Heytesbury House, which he purchased in 1933. His son George Sassoon grew up there and inherited the house, which he eventually sold.