Conversation so far:
when was Immanuel Kant born?
April 22, 1724.
where was he born?
Konigsberg, Prussia.
who were his parents?
His mother, Anna Regina Reuter.
and his father?
His father, Johann Georg Kant (1682-1746), was a German.

Question: did he have any siblings?
Self-contained rewrite: did Immanuel Kant have any siblings?