The ammonium ion has a formula of NH4+ and has a positive charge so it is a cation.
Meaning & History. From a Germanic name meaning eagle power, derived from the elements arn eagle and wald power. The Normans brought it to England, where it replaced the Old English cognate Earnweald.It died out as an English name after the Middle Ages, but it was revived in the 19th century.aints bearing the name include an 8th-century musician in the court of Charlemagne and an 11th-century French bishop who is the patron saint of brewers. It was also borne by Arnold of Brescia, a 12th-century Augustinian monk who rebelled against the church and was eventually hanged.
This interesting name has three possible origins, the first being derived from an Anglo-Saxon occupational name for a grower or seller of beans, from the Old English pre 7th Century 'bean', beans.he first recording in Scotland is of one Ferchard Bean (1428, Edinburgh). The first recorded spelling of the family name is shown to be that of Ailwardus Bene, which was dated 1166, The Norfolk County Pipe Rolls, during the reign of King Henry 11, 'The Builder of Churches', 1154-1189.