Complex sentence: In April 1826 Bannister wrote to Darling to say that he could no longer hold his office at its present remuneration, and on 13 October 1826 he was informed that his resignation had been accepted.
Split into simpler sentences: In April 1826, Bannister wrote to Darling to say that he could no longer hold his office at its present remuneration. On 13 October 1826, he was informed that his resignation had been accepted.