George Henry was born in Sri Lanka, where he grew up on the tea estates, and taught himself to paint in his teens. His first job was to draw oysters as draughtsman to the Ceylon company of Pearl Fishers in 1907. In 1910, he was employed by the Ceylon government as an entomologist, based at Colombo Museum. Meanwhile, he built an aviary in his garden and sketched the birds there. In 1920, he followed a short course at Leyton art school, and whilst in England met Hernrik Gronvold and George Lodge. He learnt from these artists and in 1925 was commissioned to illustrate W E Wait's Manual of the birds of Ceylon. This work became a classic and started Henry's career as an illustrator. The other highlights of his work are Salim A Ali's Indian Hill Birds, 1949, and his own A Guide to the Birds of Ceylon, which he wrote in his retirement. In England, he continued painting, illustrated many issues of the Agricultural Magazine and was a methodist lay preacher. Both his sons, David and Bruce, became bird artists.