REBUSES.

[1]

A letter prefix to the tyrant’s delight,
You’ll see a kind friend on a cold winter’s night.

[2]

My first may be divided into three parts. It may belong to one of the senses; it may be almost a lake; or it may represent 100.

My second may likewise be divided into three parts. It may have something to do with myself; it may be a part of myself; or it may represent 1.

My third may be divided into two parts. It may be either a river, or represent 500.

Then 100, 1, and 500 make the answer.

The whole was the title of one who surprised Europe by the brilliancy of his military exploits.

[3]