Complex sentence: Nathan Mayer Rothschild had rented Tring Park in Tring, Hertfordshire in the 1830s and in May 1872 it was purchased by Lionel Rothschild with 4,000 acres (16 km²) as his principal country residence.
Split into simpler sentences: Nathan Mayer Rothschild had rented Tring Park in Tring, Hertfordshire in the 1830s. It was purchased with 4,000 acres (16 km²) by Lionel Rothschild in May 1872 as his principal country residence.