Right now on movie screens a Guy is saving his world.

“Free Guy” premiered Friday. In this fantasy film, a new program makes Guy (Ryan Reynolds), a minor nonplayer character in video game “Free City,” self-aware. He then must save his virtual world from being erased.

Guy is the French form of Wido, an ancient Germanic name from either witu (“wood”) or wit (“wide”). Brought to England in 1066, it stayed in use partly because of the legend of Guy of Warwick, retold in ballads since around 1200.

In his story, Guy is a lowly cupbearer who loves Felice, daughter of the Earl of Warwick.

To become worthy of her, he travels the world slaying dragons and other monsters. After wedding Felice, Guy makes a pilgrimage to Jerusalem, returning just in time to save Winchester from Danish invaders by defeating giant Colbrand in single combat.

The name’s heroic reputation was ruined by Guy Fawkes (1570-1606).

In 1605, Fawkes joined several other Catholics in the Gunpowder Plot, planning to blow up King James and Parliament on Nov. 5. Though Fawkes wasn’t the leader, he was first arrested, and his name came to exemplify treason.

Parliament declared Nov. 5 an annual celebration. Effigies of Fawkes made of old rags were tossed into bonfires. Soon these were called “guys”. Around 1830 “guy” became slang in England for any shabbily dressed man.

Today’s the birthday of Moby Dick’s father.

Herman Melville (1819-1891) was born 202 years ago. One of America’s most famous authors, he’s best known for “Moby Dick” (1851), the story of Captain Ahab and his obsession with the great white whale that bit off his leg.

Herman’s the English form of German Hermann, derived from ancient Germanic “army man.” Hermann was a common name in medieval Germany. One example, Hermann of Reichenau (1013-1054), a Benedictine monk, who, despite having cerebral palsy, studied mathematics and astronomy and composed hymns that are still sung today.

Norman invaders brought the name to England in 1066. Families surnamed Harman are descended from medieval Hermans. Though rare in England, Herman never completely died out, partly because it was continually reinforced by goldsmiths and merchants immigrating from Holland.

Herman was more common in America than England, mostly because of German and Dutch influence. That’s how Melville got the name — his mother, Maria, was a great-great-granddaughter of Harmen Gansevoort, a Dutch settler who came to New Amsterdam in 1655. Harmen’s grandfather, Hermann (born 1570), was a brewer in Dersum, just over the Dutch border in northern Germany.

You may not know Margo’s name, but you’d likely recognize her face.

Actress Margo Martindale turns 70 today. She’s won Emmys playing crime family matriarch Mags Bennett in “Justified” (2011) and KGB handler Claudia in “The Americans” (2015 and 2016). She makes fun of herself by voicing bank-robbing “Esteemed Character Actress Margo Martindale” on Netflix’s animated “BoJack Horseman.”

Margo is a simplified spelling of Margot, a nickname for Marguerite, French form of Margaret (Greek “pearl.”)

Marguerite de Valois (1553-1615), daughter of King Henri II of France, became Queen when her cousin and husband became King Henri IV in 1589. He divorced her for being barren in 1599.

In 1845, French novelist Alexandre Dumas published “Queen Margot”, a novel based on Marguerite’s life. This falsely presented her as a sex-obsessed schemer, but helped establish Margot as a name in its own right.

Margot was often a nickname for Margaret when first used by English speakers. The two most famous British Margots, author and Prime minister’s spouse Asquith (1864-1945) and ballerina Fonteyn (1919-1991), were both born “Margaret.”