The name was sometimes conflated with Lothar.

Austria

Latin

● c1030 Liuther (nom) UrkStyria 46; 1074x1087 Liuther (nom) ibid. 77

Denmark

Latin

● 1362 Lyderus (nom) MIRGPCM4 XVI-V

Danish

● 1581 Lyder KD-1 no. 362

France

Latin

● 711 Leotarius (nom) CartYonne1 IX; c823 Lederius (nom) irminon-vol2 46, Ved, Leutharius (nom) ibid. 96, Palatiolum, Leutharus (nom) ibid. 7, Gaugiacum; 980 Leothericus (nom) NotSLdN p. 247

Germany

Latin

● 822x875 Liudharius (nom) TradCorb §149, Liutharius (nom) ibid. §56, Luithario (abl) ibid. §136; 896 Luitharij (gen) quix-vol1 6; 963x1023 Leutheri (nom) TradCorb §226; 1064 Lutharius (nom) quix-vol1 92; 1149 Luitherus (nom) mairhofer XXXIII; 1238 Luderi (gen) CDL-1.1.1 XVI, Luderum (acc) ibid. XVI, Luderus (nom) ibid. XVII; 1277 Lutherus (nom) hennes-vol1 256; 1289x1298 Luderus (nom) UrkMeck1 no. XCIX; 1303 Luderi (gen) BremUrk2 no. 33, Luderus (nom) ibid. no. 33

The Netherlands

Latin

● 850 Letheri (nom) OrkGZ no. 41