"Jillyanna \j(i)-ll-yanna, jillya(n)-na\ as a girl's name is a variant of Jillian. See for origin and meaning of Jillyanna.
The baby name Jillyanna sounds like Jillyanne and Jillianna. Other similar baby names are Jillyan, Jillianne, Gillyanne, Gillianna, Jillana, Jilliann, Jilliana, Jillanne, Julyanna, Lillyanne and Pollyanna."