blowhard

A person who talks too much or too loudly, especially in a boastful or self-important manner.

The merchants are the most ultra Secessionists, one of the secret springs of action among this class being the heavy indebtedness owing to Eastern creditors. Some men of Northern origin were the most rabid. A "blow-hard," named JAMES PATTERSON, of Augusta, Jackson County, was originally from Pennsylvania. He stumped the county and was elected to the Convention, and cast his vote for secession.

[T]he loud-mouthed blowhard seemed just the man to flinch when real danger confronted him; […]

A locality in the City of Ballarat, central western Victoria, Australia.