The Zoological Society of London (ZSL) was established by Sir Stamford Raffles and Sir Humphry Davy in 1826, who obtained the land for the zoo and saw the plans before Raffles died of apoplexy (what would now be called a stroke) later that year on 5 July – his birthday. After his death, the third Marquis of Lansdowne took over the project and supervised the building of the first animal houses. The zoo opened in April 1828 to fellows of the Society, providing access to species such as Arabian oryx, greater kudus, orangutan and the now extinct quagga and thylacine. The Society was granted a Royal Charter in 1829 by King George IV, and in 1847 the zoo opened to the public to aid funding.