Fyodor Davydovich of Galich-Mersky, Prince of Galich-Mersky, was born 1279 to Davyd Konstantinovich of Galich-Dmitrov (c1246-1280) and Eldest Daughter of Fyodor Rostislavich (c1261-c1310) and died 1335 of unspecified causes.
After Vasili Konstanstinovich's death, the Principality of Galich-Dmitrov was split into two separate principalities: the Principality of Galich-Mersky and the Principality of Dmitrov. Fyodor Davydovich took over the rule of the Principality of Galich-Mersky.
Children
| Name | Birth | Death | Joined with |
| Ivan Fyodorovich (c1295-c1350) | 1295 | 1350 | |
Siblings
| Name | Birth | Death | Joined with |
| Ivan Davydovich (c1277-c1279) | 1277 | 1279 | |
| Fyodor Davydovich of Galich-Mersky (c1278-1335) | 1279 | 1335 | |
| Boris Davydovich of Dmitrov (c1279-1334) | 1279 | 1334 | |
Residences
Footnotes (including sources)