Complex sentence: Anna had an older brother William Cuppage (1756--1832), who had an appointment for him at the Royal Military Academy, Woolwich by Edmund Burke; he was later a lieutenant-general of the Royal Artillery and a neighbour of Edward Nicolls in Woolwich.
Split into simpler sentences: Anna had an older brother William Cuppage (1756--1832), who had an appointment secured for him at the Royal Military Academy, Woolwich by Edmund Burke. William was later a lieutenant-general of the Royal Artillery and a neighbour of Edward Nicolls in Woolwich.