Family name Gilduin (Gilduin 
) , worldwide, is an extremely rare cognomen. Much more frequently, Gilduin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gilduin | France, United States |
|
bernard gilduin (b. 1050) |
|
| saint gilduin FR (b. 1053) |
|