Wolfgang Amadeus Mozart was born to Leopold and Anna Maria Pertl Mozart at 9 Getreidegasse in Salzburg, capital of the sovereign Archbishopric of Salzburg, in what is now Austria, says Wikipedia.
Then it was part of the Holy Roman Empire.
His only sibling to survive past birth was Maria Anna (1751–1829), called "Nannerl".
His father Leopold (1719–1787) was deputy Kapellmeister to the court orchestra of the Archbishop of Salzburg, and a minor composer. He was also an experienced teacher. In the year of Mozart's birth, his father published a violin textbook which achieved some success.
Leopold eventually gave up composing when his son's outstanding musical talents became evident.[8] He was Wolfgang's only teacher in his earliest years, and taught his children languages and academic subjects as well as music.