First O'Shanassy ministry
The First O'Shanassy Ministry was the 2nd ministry of the Government of Victoria. It was led by the Premier of Victoria, John O’Shanassy, with the swearing in of the ministry occurring on 11 March 1857. Notes

References 

O'Shanassy
Ministries of Queen Victoria
Cabinets established in 1857
1857 establishments in Australia
Cabinets disestablished in 1857
1857 disestablishments in Australia