Year 1:
* Keeper: Oliver Wood
* Chaser: James Potter
* Chaser: Sirius Black
* Chaser: Remus Lupin
* Beater: Frank Longbottom
* Beater: Alice Fortescue
* Seeker: Harry Potter (joins mid-season)
Year 3:
* Keeper: Oliver Wood
* Chaser: Harry Potter
* Chaser: Hermione Granger
* Chaser: Ron Weasley
* Beater: Katie Bell
* Beater: Alicia Spinnet
* Seeker: Ginny Weasley
Year 5:
* Keeper: Ron Weasley
* Chaser: Harry Potter
* Chaser: Hermione Granger
* Chaser: Katie Bell
* Beater: Alicia Spinnet
* Beater: Demelza Robins
* Seeker: Ginny Weasley
Year 6:
* Keeper: Ron Weasley
* Chaser: Harry Potter
* Chaser: Hermione Granger
* Chaser: Ginny Weasley
* Beater: Alicia Spinnet
* Beater: Demelza Robins
* Seeker: Harry Potter
Year 7:
* Keeper: Ron Weasley
* Chaser: Harry Potter
* Chaser: Hermione Granger
* Chaser: Ginny Weasley
* Beater: Alicia Spinnet
* Beater: Demelza Robins
* Seeker: Harry Potter
Important Notes:
* The team composition can vary slightly throughout the series.
* Players like Fred and George Weasley and Lee Jordan are also mentioned as being on the Gryffindor team at some point, but their specific positions and years are not explicitly stated.
Let me know if you have any other questions about the Gryffindor Quidditch team!