In Love’s Labour’s Lost, the lady courted by Longaville is Maria.
Longaville is one of the three noble lords attending Ferdinand, King of Navarre. At the start of the play, the king and his companions swear to avoid women for three years so they can devote themselves to study and fasting. Their vow quickly collapses when the Princess of France and her ladies arrive, and each man falls in love.
The play’s central group of ladies includes Rosaline, Maria, and Katharine, who are courted by Berowne, Longaville, and Dumaine respectively. Maria is therefore easy to confuse with the other ladies, especially Rosaline, who has the most prominent connection to Berowne. Jaquenetta is not one of the noble ladies: she is a country wench involved in the comic subplot with Costard and Don Armado.
Love’s Labour’s Lost was probably written in 1594–1595 and first published in quarto in 1598. Its wordplay, disguises, mocked courtship rituals, and unusually delayed marriages make it one of Shakespeare’s most distinctive early comedies.