In some cases it formed a serf class, e.g.
A little serf boy, seeing Prince Andrew, ran into the house.
The serf, who was also a soldier, revolted against bondage.
Nicholas, who, as the roads were in splendid condition, wanted to take them all for a drive in his troyka, proposed to take with them about a dozen of the serf mummers and drive to "Uncle's."
When a decision had to be taken regarding a domestic serf, especially if one had to be punished, he always felt undecided and consulted everybody in the house; but when it was possible to have a domestic serf conscripted instead of a land worker he did so without the least hesitation.