Stated as originally being from Numurkah Football Club,[3] Ennis played with the Carlton reserves in 1922[4] and 1923.
[5] Ennis transferred to Port Melbourne in the Victorian Football Association shortly before the 1923 final series.
Ennis made 27 appearances for Port Melbourne, including playing in their losing 1923 Grand Final side and kicking 62 goals in the 1924 season.
Ennis joined Hawthorn early in the 1925 VFL season[6] and made 19 appearances over his three seasons with Hawthorn, scoring 42 goals, but failed to cement a regular starting position.
[7] In 1930 Ennis married Verna Mary Murcutt (1902–1984) and they had four children before he died at the age of 46.