| 1 |
 Fer Ap Confer of Alclud | I4462 | b. 260 | |
| 2 |
King of Munster Fer Corb | I5131 | b. 220 | |
| 3 |
Feradach of Scots | I3750 | | |
| 4 |
Feradach Culdub mac Amalgaid | I9409 | b. Abt 555 | Airther, Oriel, Ireland  |
| 5 |
Feradach Macailill O'Haongus of Ancient Scotland | I4263 | b. 360 BC | |
| 6 |
King of Scots Ferchar Fota | I3751 | | |
| 7 |
King of Scots Ferchar Macconnad | I3754 | | |
| 8 |
King of Castile Ferdinand III | I813 | b. 1199 | Castile, Spain |
| 9 |
King of Ireland Feredach Fionn-Feachtnach | I4345 | b. 0010 | |
| 10 |
Fergus of Scots | I3749 | | |
| 11 |
Fergus | I16134 | | |
| 12 |
Fergus | I16142 | | |
| 13 |
Lord of Galloway Fergus | I3566 | b. 1058 | Carrick, Argyll, Scotland, United Kingdom |
| 14 |
Fergus Altleathan | I16147 | | |
| 15 |
Fergus Fairce Macnuadu of Ireland | I5085 | b. 167 BC | |
| 16 |
King of Ireland Fergus Fortamail | I4391 | b. 454 BC | |
| 17 |
Fergus mac Aedan | I9385 | b. Abt 615 | Ulster, , Ireland |
| 18 |
Fergus mac Conall | I9528 | b. Abt 455 | , , , Ireland |
| 19 |
King of Scots Fergus Maceochaid | I3770 | | |
| 20 |
King of Ancient Scotland Fergus Macferadach | I4262 | b. 345 BC | |
| 21 |
Fergus Macmuiredeach of Connacht | I5107 | b. 480 | |
| 22 |
Fergus Macrogallach of Connacht | I5102 | b. 620 | |
| 23 |
King of Scots Fergus Mor Macerc | I2075 | b. 430 | Dalriada, Argyll, Scotland, United Kingdom |
| 24 |
Fernando Alfonso of Leon | I8219 | | |
| 25 |
Fernando Alfonso of Leon | I8232 | b. 1211 | |
| 26 |
Archdean of Santiago Fernando Alfonso | I8234 | b. 1215 | Salamanca, Spain |
| 27 |
King of Castile Ferninand II | I905 | b. 1137 | , , , Spain |
| 28 |
Ferreolos of Rome | I4730 | b. 390 | Rome, , Lazio, Italy |
| 29 |
De Ayala, Lord Fernan Perez | I8285 | b. 1304 | |
| 30 |
Colhan, Earl of Buchan Fergus | I4171 | b. 1150 | |
| 31 |
Graham, Fern | I7709 | | |
| 32 |
Ivie, Ferdinando | I8795 | b. 1504 | , Gloucestershire, England, United Kingdom |
| 33 |
Jimenez, King of Leon Ferinand I | I2286 | b. 1018 | |
| 34 |
Leon, Fernando | I8209 | b. 1192 | |
| 35 |
MacKintosh, Ferguhard | I3640 | b. | Inverness, Scotland, United Kingdom |
| 36 |
Martel, Lord of Moselle Ferreolus | I1820 | | |
| 37 |
Noigillach, Fergus Cerrbel Macconnaill | I2672 | b. Abt 455 | , Meath, Leinster, Ireland |
| 38 |
Nunez, Count of Lara Fernan Gonzalez | I2759 | b. 910 | |
| 39 |
Nunez, Fernando | I2761 | | |
| 40 |
O'Crimthinn, Feradach Foglas Macnuadu | I4384 | b. 305 BC | |
| 41 |
O'Neill, High King of Ireland Fergail MacMaille | I9476 | b. Abt 650 | , , , Ireland |
| 42 |
Prater, Ferdinando | I4453 | b. 1576 | Stanton, St. Bernard, Swindon, Wiltshire, England, United Kingdom |
| 43 |
Prather, Fernando Bruce | I6626 | b. 1845 | |
