Marquess of Crewe was a title in thePeerage of the United Kingdom. It was created in 1911 for theLiberal statesmanRobert Crewe-Milnes, 1st Earl of Crewe. He had already been createdEarl of Crewe, ofCrewe,Cheshire, in 1895, and was madeEarl of Madeley, inStaffordshire, at the same time as he was granted the marquessate. These titles were also in the Peerage of the United Kingdom. Lord Crewe was the only son of the noted Victorian literary personageRichard Monckton Milnes. The latter had been raised to the Peerage of the United Kingdom asBaron Houghton, ofGreat Houghton in theWest Riding of Yorkshire, in 1863. Lord Houghton married the Honourable Annabella Crewe, daughter ofJohn Crewe, 2nd Baron Crewe (seeBaron Crewe). Their son, the second Baron, succeeded to the Crewe estates on the death of his maternal uncleHungerford Crewe, 3rd Baron Crewe, in 1894. Lord Crewe's two sons both predeceased him and the titles became extinct on his death in 1945.
Richard Slater Milnes, grandfather of the first Baron, wasMember of Parliament for theYork.Robert Pemberton Milnes, father of the first Baron, was Member of Parliament forPontefract. Lady Celia Hermione Crewe-Milnes, daughter of the first Marquess, married Sir Edward Clive Coates, 2nd Baronet. In 1946, she and her husband assumed bydeed poll the additional surname of Milnes (seeMilnes Coates baronets). Richard Milnes, great-great-grandfather of the first Baron, was the uncle ofSir Robert Milnes, 1st Baronet (seeMilnes baronets).