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
Easter Rising to be hopeless, they dispersed on Saturday morning. Many went home and were arrested following the rising, while others, including Mellows, went "on the run". By the time British reinforcements arrived in the west, the rising there had already disintegrated. The Easter Rising resulted in at least 485 deaths, according to the Glasnevin Trust. Of those killed: More than 2,600 were wounded; including at least 2,200 civilians and rebels, at least 370 British soldiers and 29 policemen. All 16 police fatalities and 22 of the British soldiers killed were Irishmen. About 40 of those killed were children (i.e. under 17