This has been a popular identification for later writers of fiction, beginning at Pierce Egan the Younger's 1840 novel Robin Hood and Little John.
Pierce Brosnan | Hans Holbein the Younger | William Pitt the Younger | Franklin Pierce | Seneca the Younger | Jennifer Egan | George Dance the Younger | Pierce | Pliny the Younger | Fort Pierce, Florida | Cato the Younger | Antonio da Sangallo the Younger | Pierce Butler | Lucas Cranach the Younger | William Luther Pierce | Pierce Pettis | Paul Pierce | Greg Egan | George Colman the Younger | David Teniers the Younger | William Peverel the Younger | Mary Pierce | Martino Longhi the Younger | John Winthrop the Younger | Jason Pierce | Henry Vane the Younger | Barbara Pierce Bush | Sam Younger | Sam Egan | Pliny the younger |
In the 1840 story by Pierce Egan the Younger (translated into French, divided into two parts and resumed by Alexandre Dumas, published posthumously in 1872) Gilbert and his wife Margaret are Robin's foster parents (his real father according to the Egan/Dumas storyline was the Earl of Huntingdon), and Gilbert taught Robin how to use the bow and arrow.