Xerxes once
wept when he gazed over his huge
army and considered that not one of them would be
alive in a
hundred years.
There is an opera by Handel called Xerxes or in Italian Serse, which starts with the famous aria Ombra mai fu in which Xerxes extols a tree in his garden for giving him shade. Then follows something no-one really needs to know about his brother Arsamenes, the beautiful Romilda, the beautiful Atalanta, the beautiful foreign princess Amastris, and... Look, it's a baroque opera, you just sit back and enjoy the singing.
Inscriptions have been found at Persepolis, set up by Xerxes, boasting how many countries he has conquered by the favour of Ahura-mazda, and what a good bowman and horseman he is, and such things.
The Old Persian form of the name is Khshayârshâ.
There was a Xerxes II who reigned for 45 days in 423 BCE.