| Abbreviation | Definition |
|---|---|
| ESRO | East Sussex Record Office |
| ETC | Et Cetera (and also) |
| etc | et ctera (and also) |
| EX | EXecutor |
| ex | executor, executrix |
| exor | executor |
| extx | executrix |
| F | Female |
| f | female, father |
| F | Friends |
| f.m. | feodum militis (knight's fee) |
| FA | Father |
| Fa. | father |
| FASG | Fellow of the American Society of Genealogy |
| FASG | Fellow, American Society of Genealogists |
| FCGS | Fairfield County Genealogy Society |
| FCGS | Freeborn County Genealogy Society |
| FEEFS | Federation of East European Family Societies |
| FF | Father's Father |
| FGBS | Fellow, New York Genealogical and Biographical Society |