- Mar 1 10th Grand National: Capt. Josey Little aboard 12/1 Chandler wins; race marred by fatal falls of 3 competitors
Historic Event
Mar 3 American education reformer Horace Mann joins the US Senate, representing Massachusetts
- Mar 4 Sardinia-Piemonte gets new Constitution
- Mar 4 Carlo Alberto di Savoia signs the Statuto Albertino that will later represent the first constitution of the Regno d'Italia
- Mar 5 Louis Antoine Garnier-Pages is named French minister of Finance
- Mar 7 In Hawaii, Great Mahele (division of lands) signed
- Mar 11 Louis-Hippolyte Lafontaine and Robert Baldwin become the first Prime Ministers of the Province of Canada to be democratically elected under a system of responsible government
- Mar 12 2nd Republic established in France
- Mar 15 A revolution breaks out in Hungary. The Habsburg rulers are compelled to meet the demands of the Reform party.
- Mar 23 The ship John Wickliffe arrives at Port Chalmers carrying the first Scottish settlers for Dunedin, New Zealand. Otago province is founded.
- Mar 24 State of siege proclaimed in Amsterdam
- Mar 27 John Parker Paynard originates medicated adhesive plaster
Niagara Falls Stops Flowing
Mar 29 Niagara Falls stops flowing for 30 hours due to an ice jam
