The lord had to protect the king (and/or any other class) in exchange for land. Then, they rent off their land to knights, who, in exchange, protected the lords and kings.
The lord would simply remarry
The lord of a village or town would live in a manor house.
They would live in their lord's castle.
A medieval lord was the ruler of the land. The lord would make all the decisions.
In the middle ages a lord would grant land to his vassal.vassals
they would cook for the men
A medieval lord could be any age. A child could be born a lord.
the medieval lord drunk from the river or a lake if they had one.
No, a noblewoman would be a 'lady'.
the lord and knights sometimes the king would obviously and his lady.
Yes, blacksmithing is a skilled job and they would be among the most valued workers in medieval times.
liege lord