Baron Lyttelton is a Baronial in the British peerage, which has been created twice, though both times to the same family, being awarded to William Henry Lyttelton in 1794 some fifteen years after his nephew, Thomas Lyttelton, died without legitimate issue. In 1888, Charles George Lyttelton, 5th Baron Lyttelton, succeeded to the Viscounty of Cobham, after the death of the 3rd Duke of Buckingham and Chandos, and into which title the Barony is now merged.
Please note that these lists are rather incomplete.
Barons Lyttelton of Frankley, first Creation (1756)
Barons Lyttelton of Frankley, second Creation (1794)