Answer
Austen Chamberlain was the older half-brother of Neville Chamberlain. They shared the same father, Joseph Chamberlain, but had different mothers. Austen was born in 1863 to Harriet Kenrick, while Neville was born in 1869 to Florence Kenrick. Despite their different mothers, Austen and Neville had a close relationship and worked together on several political projects.