He had already been created a Baronet, of Ennismore Gardens in the Parish of St Margaret, Westminster, in the County of London, in the Baronetage of the United Kingdom on 6 February 1891.
Sir Henry Robinson, brother of the first Baron, was vice-president of the Local Government Board in Ireland between 1879 and 1891.
Sir William Cleaver Francis Robinson, brother of the first Baron, was also a prominent colonial administrator.
Bryan Robinson, great-grandfather of the first Baron, was Regius Professor of Physic at Trinity College, Dublin.
Both the first and future second Barons Rosmead attended the wedding of Nora Robinson and Alexander Kirkman Finlay on 7 August 1878 in St James' Church, Sydney.