Henry Bayly-Paget, 1st Earl of Uxbridge, known as Henry Bayly until 1769 and as Lord Paget between 1769 and 1784, was a British peer.

Plas Newydd is a country house set in gardens, parkland and surrounding woodland on the north bank of the Menai Strait, in Llanddaniel Fab, near Llanfairpwllgwyngyll, Anglesey, Wales. The current building has its origins in 1470, and evolved over the centuries to become one of Anglesey's principal residences. Owned successively by Griffiths, Baylys and Pagets, it became the country seat of the Marquesses of Anglesey, and the core of a large agricultural estate. The house and grounds, with views over the strait and Snowdonia, are open to the public, having been owned by the National Trust since 1976.