Facts: - death place: birmingham , england - alt: captain uniform in 1868 harry gem in his birmingham rifle volunteer corps - caption: captain uniform in 1868 harry gem in his birmingham rifle volunteer corps - death date: 4 september 1881 - education: king 's college , london - birth date: 21 may 1819 - name: harry gem - image size: 180px - nationality: british - image: capt. harry gem.jpg - birth place: birmingham , england Based on these bullet points, write a short biography describing the life of harry gem .
major thomas henry gem -lrb- 21 may 1819 -- 4 november 1881 -rrb- , known as harry gem , was an english lawyer , soldier , writer and sportsman .alongside his friend augurio perera , he is credited as the earliest inventor of the game of lawn tennis .