Complex sentence: The son of Colonel Harold Iremonger and his wife Julia Quarry, he was educated at King's School, Canterbury and Oriel College, Oxford, where he gained a sailing blue, then worked as a district officer in the Colonial Administrative Service in the Western Pacific.
Split into simpler sentences: The son of Colonel Harold Iremonger and his wife Julia Quarry, he was educated at King's School, Canterbury and Oriel College, Oxford, where he gained a sailing blue. Iremonger then worked as a district officer in the Colonial Administrative Service in the Western Pacific.