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.
The name derives from the Old French, Middle English mote, a moat, ditch or fortified stronghold, and was originally given as a topographical name to one who resided by such a fortification, or as a locational name to someone from any of the places in France named with this word.he first recorded spelling of the family name is shown to be that of William Moth, which was dated 1273, in the Hundred Rolls of Norfolk, during the reign of King Edward 1, known as The Hammer of the Scots, 1272 - 1307. Surnames became necessary when governments introduced personal taxation.