Eckhard m. Old High German ecka 'edge, corner' + Old Saxon hard, Old High German hart 'strong, hard'.

Estonia

Middle Low German

● 1404 Eggerd BbRT p. 343; 1426 Eggert ibid. p. 351; 1429 Eggert ibid. p. 353; 1443 Eggerd ibid. p. 365

France

Latin

● c823 Echardus (nom) irminon-vol2 9, Palatiolum; 1378 Ekhardus (nom) hanquetvol1 2358

Germany

Latin

● 822x875 Ekkiardo (abl) TradCorb §36; 1137 Ekhardus (nom) quix-vol1 102; 1180 Ekhardus (nom) ibid. 34; 1207 Eggehardus (nom) hennes-vol1 8; 1225 Eckehardus (nom) ibid. 68; 1229 Eggehardus (nom) CDL-1.1.1 X; 1234 Eckehardus (nom) hennes-vol1 91; 1255 Eckehardum (acc) ibid. 157; 1259 Ekehardus (nom) CDL-1.1.1 XXXI; 1305 Ecgehardus (nom) CDL-1.2.1 CXCIII, Eggehardus (nom) UrkMeck-5 2996

Early New High German

● 1400 Ekkart (nom) mairhofer DCLXVII; 1424 Ekkehart (nom) ibid. DCCXX

Latvia

Latin

● 1286 Eggehardi (gen) RigSB 4; 1289 Eghardi (gen) ibid. 11; 1291 Eghardi (gen) ibid. 27

Poland

Latin

● 1251 Eckehardus (nom) hennes-vol1 141

Sweden

Latin

● 1350 Egardus (nom) SDHK no. 6002