I'm sorry but the Lygon name was already being written as Ligon in England before John Lygon/Ligon was born!
See: Worcestershire, England, Extracted Parish Records about Ligon, Richard.
45a Ligon, Richard, knight, Madresfield. (See No. 40b.) Admon.
Book: Burialls 1559. (Burial)
Collection: Worcestershire: - Wills and Administrations in The Court of The Bishop of Worcestershire, Also Marriage Licences and Sequestrations, 1451-1600