Daily AncestorGrandnephew
A grandnephew, also called a great-nephew, is the grandson of your brother or sister: the son of your nephew or niece.
Grandnephew and great-nephew are two names for the same relative: a sibling's grandson. Some families say one, some the other, and both turn up in wills.
Do not confuse this with the older use of nephew for a grandson. A grandnephew is still on a brother's or sister's line, not yours. A will that names several grandnephews can outline a whole branch of a family.
As seen in a recordBequest in a will, 1880s
to my grandnephew Lysander Cobbett, grandson of my late brother Amos
How to cite this page
Daily Ancestor. "Grandnephew." Dictionary of Old Record Words. https://dailyancestor.com/dictionary/relationships/grandnephew. Last checked 2026-10-12.