In the world, Guiscard (Guiscard 
) is a very rare boy's first name.
| VARIANT | COUNTRY |
|---|---|
| Guiscard | United States, Germany, France |
| guiscard bustari Florentine aventurer (b. 1250) |
|
|
| guiscard de roucy |
|
|
| guiscard von raron |
|