It is named after Lord Raglan, the 1st Baron Raglan, who is said to have worn a coat with this style of sleeve after the loss of his arm in the Battle of Waterloo. The Raglan sleeve was invented by coat producer Aquascutum for Lord Raglan to allow him room to use his sword in battle. It gave greater movement to the wearer, instead of the usual sleeve head which was prefixed.
- Quinion, Michael. "Cardigan". World Wide Words. Retrieved 2013-01-13.
Another item whose name appeared at the time was the raglan, a type of overcoat named after Lord Raglan, a British general in the Crimea. The garment was unusual in that the sleeves continued in one piece up to the neck, producing a larger, looser armhole that suited the one-armed general.
- Oxford English Dictionary Third edition, (2008) online version September 2011, accessed 7 November 2011. An entry for this word was first included in New English Dictionary, 1903.