William Horman (c. 1440 – April 1535) was a headmaster at Eton and Winchester College in the early Tudor period of English history.[1] He is best known for his Latin grammar textbook the Vulgaria, which created controversy at the time due to its unconventional approach in first giving examples of translations of English writings on different topics, and later discussing the rules of grammar.[2] He asserted, probably following Quintilian, that grammar cannot be perfect without music.[3]