Original: Wilhelm (later William) Steinitz (Prague, May 17, 1836 â "August 12, 1900) was an Austrian and then American chess player and the first undisputed world chess champion from 1886 to 1894.
Simplified: Wilhelm (later William) Steinitz (Prague, 17 May 1836 â "New York, 12 August 1900) was an Austrian chess grandmaster who emigrated first to London, then to the USA.