 Other African nations to be represented in the World Rugby Rankings as Member Unions include Côte d'Ivoire, Kenya, Uganda and Zambia.South Africa and Kenya are among the 15 "core teams" that participate in every event of the men's World Rugby Sevens Series.Records of women's rugby football date from the late 19th century, with the first documented source being Emily Valentine's writings, in which she states that she set up a rugby team in Portora Royal School in Enniskillen, Ireland in 1887.