"ers" as an ending to words in Britain is , in essence, a diminutive expressing fondness and intimacy (not of the greek kind I hasten to add) with other major related variants EG: if you are in a football or cricket team you may well be named as follows:
Beckham-Becks, Gascoigne-Gazza, Agnew-Aggers, Atherton-Athers, Trescothick-Tresco, Flintoff-doessnt count because hes called Freddy after Fred Flintstone, I recall the Pakistan fast bowler Tahir Naquash being called Naqqers by the test match commentary team..