HMS Onslow (1916) 15 February 1916 and completed in April 1916. Her first commander was John Tovey, (later Admiral of the Fleet). On 24 April 1916, the Easter Rising against British rule broke out in Ireland. As a response, two Infantry Brigades were ordered from Liverpool to Dublin to reinforce the British forces, with "Onslow" escorting the transports carrying these troops. She saw action at the Battle of Jutland, where "Onslow" was badly damaged, with her speed reduced to . Nevertheless, Tovey pressed home the attack against first a cruiser and then a line of battlecruisers. "Onslow" was brought back to Aberdeen despite
Robert Brennan (journalist) also active in the republican movement and had her sworn into the IRB. She was with him in Wexford for the 1916 Easter Rising. He commanded the insurgents in Wexford during the 1916 Easter Rising and, along with other leaders Seamus Rafter and Seán Etchingham, was sentenced to death. The sentence was commuted to penal servitude. His continuing political activity resulted in further imprisonments in 1917 and afterwards. His daughter Maeve Brennan was born while he was in prison. In April 1918 he was placed in charge of a newly formed Sinn Féin Department of Propaganda/Publicity. However, in November 1918