Michael Browne was a poor law guardian and a member of Wexford's first County Council.

As a child, she shared her father's interest in politics and was a young member of the Kilmore branch of the Ladies Land League.

[1] Browne joined Sinn Féin in 1912 and the Irish Volunteers in 1914 and flew a tricolour from her family home, Rathronan Castle, during the Easter Rising.

[4] She was elected to Seanad Éireann of the Irish Free State as a Cumann na nGaedheal member, at a by-election on 20 June 1929.

[3] Partly because she wore her blue blouse (the garb of the ACA) in the Seanad and the Dáil during this period, the wearing of political uniforms was banned in both houses.

[6] Browne claimed not be a fascist, but had joined ranks with the ACA because she shared their Anti-Communist and Republican viewpoints.

[1] Browne was also a naturalist and was instrumental in having the Great Saltee Island conserved as a bird sanctuary in 1938.

[1] Browne was a fluent speaker of Yola, an extinct English dialect once commonly spoken in parts of Wexford.