Frederick m. Old High German fridu, Old Saxon frithu 'peace' + Old High German rih 'ruler'.

Austria

Latin

● 1237 Friderico (abl) hennes-vol1 96, Fridericus (nom) ibid. 96

Czech Republic

Latin

● 1349 Bedrzich (nom) chlumecky 62, Bedrzichoni (dat) ibid. 16; 1350 Fridrico (abl) ibid. 199; 1353 Beddrzich (nom) ibid. 85, Bedrzich (nom) ibid. 133, Bedrzichoni (dat) ibid. 145; 1354 Fridricus (nom) ibid. 54, Fritrico (dat) ibid. 62; 1355 Frytricus (nom) ibid. 79

England

English

● 1586 Frederick DEmar-vol2 p. 13

Estonia

Middle Low German

● 1385 Vrederik BbRT p. 338; 1412 Vrederik ibid. p. 346; 1416 Vrederik ibid. p. 347; 1434 Vrederik ibid. p. 356; 1435 Frederik ibid. p. 358; 1437 Frederik ibid. p. 361, Frederyck ibid. p. 360

France

Latin

● 1047 Frederici (gen) CartNDSaintes II; 1121 Fridericus (nom) CartNDJosaphat X; 1135 Fredericus (nom) clairvaux-12thc 7; 1136 Fredericus (nom) ibid. 8; 1138x62 Fredericus (nom) ibid. 83, Fridericus (nom) ibid. 84; 1147 Frederici (gen) ibid. 19, Fredericus (nom) ibid. 14; 1159 Fredericus (nom) ibid. 37; 1162 Fridericus (nom) ibid. 40; 1163 Frederici (gen) ibid. 99; 1180 Frederici (gen) RotScaNor p. 10; 1378 Frederici (gen) hanquetvol1 1264, Fredericus (nom) ibid. 1871

Old French

● 1313 Frederic Paris1313 p. 5

Germany

Latin

● 814 Friderici (gen) quix-vol1 86; 822x75 Frederico (abl) TradCorb §218, Fredericus (nom) ibid. §40; 937 Friderici (gen) HambUrk-vol1 XXXI; 1103 Fridericus (nom) quix-vol1 62; 1130 Friderico (abl) ibid. 63; 1137 Fredericus (nom) ibid. 102; 1142 Friderico (abl) mairhofer II, Fridericus (nom) ibid. XIII, Fridrich (nom) ibid. I; 1145 Fridericus (nom) ibid. XIX; 1147 Fridericus (nom) ibid. XXII; 1149 Friderici (gen) ibid. XXXIII, Fridericus (nom) ibid. XXXIII; 1151 Fridericus (nom) ibid. XXXIX; 1153 Friderico (abl) quix-vol1 30; 1155x1190 Friderici (gen) ibid. 52, Fridericus (nom) ibid. 52; 1165 Friderici (gen) ibid. 31, Friderico (abl) ibid. 31, Fridericus (nom) ibid. 31, Fritherico (abl) ibid. 93; 1166 Frederici (gen) ibid. 51, Frederico (abl) ibid. 51, Fredericus (nom) ibid. 51; 1168 Friderici (gen) ibid. 65, Friderico (abl) ibid. 65; 1173 Friderico (abl) ibid. 81; 1174 Friderici (gen) ibid. 32, Friderico (abl) ibid. 32, Fridericus (nom) ibid. 32; 1180 Friderico (abl) ibid. 34, Fridericus (nom) ibid. 34; 1185 Friderico (abl) ibid. 37; 1200 Fridericus (nom) hennes-vol1 5; 1202 Friderici (gen) ibid. 6, Fridericus (nom) ibid. 6; 1207 Fridericus (nom) ibid. 8, Fridhericus (nom) ibid. 8; 1213 Friderico (abl) ibid. 14, Fridericus (nom) ibid. 14; 1214 Friderici (gen) ibid. 15, Fridericus (nom) ibid. 15; 1214x15 Friderico (abl) ibid. 19, Fridericus (nom) ibid. 19; 1215 Fredericus (nom) ibid. 18, Friderici (gen) ibid. 18, Friderico (abl) ibid. 18, Fridericus (nom) ibid. 17; 1216 Friderico (abl) ibid. 26, Fridericus (nom) ibid. 20; 1217 Frederico (abl) ibid. 28, Fredericus (nom) ibid. 28, Fridericus (nom) quix-vol1 71; 1218 Friderici (gen) hennes-vol1 32, Friderico (abl) ibid. 31, Fridericus (nom) ibid. 30; 1219 Friderici (gen) ibid. 36, Friderico (abl) ibid. 36, Fridericus (nom) ibid. 36; 1220 Friderici (gen) ibid. 44, Friderico (abl) ibid. 44, Fridericus (nom) ibid. 44; 1221 Friderici (gen) ibid. 55, Friderico (abl) ibid. 55, Fridericus (nom) ibid. 54; 1222 Fridericus (nom) ibid. 62; 1223 Fridericus (nom) ibid. 64; 1225 Fridericus (nom) ibid. 68; 1234 Fridericus (nom) ibid. 89; 1236 Fridericus (nom) ibid. 94, Frithericus (nom) ibid. 94; 1401 friderici (gen) HD1401 no. 101, friderico (dat) ibid. no. 12; 1408 Friderici (gen) mairhofer DCLXXXIV; 1415 Friderico (abl) ibid. DCC, Fridericus (nom) ibid. DCXCIX; 1425 Friderici (gen) ibid. DCCXXI, Friderico (dat) ibid. DCCXXI, Fridericus (nom) ibid. DCCXXI; 1428 Friderico (abl) ibid. DCCXXVIII, Fridericum (acc) ibid. DCCXXVIII; 1429 Friderici (gen) ibid. DCCXXIX, Friderico (abl) ibid. DCCXXIX, Fridericum (acc) ibid. DCCXXIX

Early New High German

● 1403 Fridreichs (gen) mairhofer DCLXXIV; 1407 Fridreich (nom) ibid. DCLXXXI; 1409 Fridreich (nom) ibid. DCLXXXVI; 1411 Fridreich (nom) ibid. DCXCII; 1419 Fridreich (nom) ibid. DCCX, Fridreichs (gen) ibid. DCCIX; 1426 Fridreich (nom) ibid. DCCXXIV; 1427 Fridreich (nom) ibid. DCCXXV; 1429 Fridreich (nom) ibid. DCCXXXIII

◑ 1407 Fritz (nom) mairhofer DCLXXXII; 1410 Fritz (nom) ibid. DCXCI; 1497 Fricz Nurn1497 2636, Frietz ibid. 1797, Fritz ibid. p. 1

Italy

Latin

● 1220 Fridericum (abl) hennes-vol1 46; 1224 Friderici (gen) ibid. 65, Friderico (abl) ibid. 65, Fridericus (nom) ibid. 65; 1226 Fredericus (nom) ibid. 70, Friderici (gen) ibid. 70, Friderico (abl) ibid. 70; 1230 Fridericus (nom) ibid. 78; 1265x1339 Federici (gen) BBC-Berg 29, Frederici (gen) ibid. 181; 1282 Fredericus (nom) ibid. p. XLVIII, Fredrericus (nom) ibid. p. XLVII; 1286 Fredericus (nom) ibid. p. XLIII; 1297 Federicus (nom) ibid. p. XLV; 1326 Federici (gen) Friuli-14thC no. 434, Federico (abl) ibid. no. 427, Federicum (acc) ibid. no. 443; 1327 Federico (abl) ibid. no. 449

◑ 1326 Fedregino (dat) Friuli-14thC no. 421

Latvia

Latin

● 1293 Frederico (dat) RigSB 38

Poland

Latin

● 1232 Fridericus (nom) hennes-vol1 87

Switzerland

Latin

● 1326 Federicus (nom) Friuli-14thC no. 429