Although arguably there is no connection between the meaning of a surname and a coat of arms, the origins as known seem to us unlikely given that a coat of arms of great prominence was granted to the family of Hurtado de Mendoza in circa 1600.
Freezing meat keeps bacteria in a dormant stage. However, once thawed, these bacteria can become active again. Never thaw meat on the counter or let it sit out of the refrigerator for more than two hours. In the summer, reduce this time to 1 hour.
To thaw frozen milk, you can move it to the refrigerator (it takes 24 hours to thaw), then warm by running warm water over the bag or bottle of milk and use it within the next 24 hours. If you need it immediately, then remove it from the freezer and run warm water over it until it's at room temperature.