Vice-Admiral Sir Robert John Le Mesurier McClure (28 January 1807 – 17 October 1873) was an Irish explorer who explored the Arctic. In 1854 he traversed the Northwest Passage by boat and sledge, and was the first to circumnavigate the Americas.
Early life and career
McClure was born in Wexford in the south-east of Ireland. His father was Captain Robert McClure from County Londonderry in Ulster, who was serving with the 89th Foot. McClure's mother (the daughter of Archdeacon John Elgee) and father had met and married while his father was stationed in Wexford in 1807; but, his father had died by the time of McClure's birth. He was a first cousin of Jane Wilde, the mother of Oscar Wilde, and spent his childhood under the care of his godfather, John Le Mesurier, governor of Alderney, by whom he was educated for the army. It is said that this branch of the McClures, who settled in County Londonderry in the 1650s, during the Plantation of Ulster, were actually MacLeods whose names had been altered.
Later career
From 1856 to 1861 he served in eastern waters, commanding a division of the Naval Brigade before Canton in 1858, for which he received the Order of the Bath. His latter years were spent in a quiet country life; he attained the rank of rear-admiral in 1867, and became a vice-admiral in 1873. He died later that year.
McClure is buried at Kensal Green Cemetery, London. His epitaph reads: 'Thus We Launch into this Formidable Frozen Sea. Spes Mea in Deo.' McClure Strait was later named after him, as well as the lunar McClure crater in the Mare Fecunditatis, the Sea of Fertility.
center|thumb|200px|Robert McClure’s grave at Kensal Green Cemetery, London, United Kingdom