Several prominent Welsh people have signed a petition calling on the Government to halt local housing plans in an effort to strengthen the Welsh language.Among the people who have signed the petition are writers Dewi Prysor, Catrin Dafydd, Angharad Blythe and Dr Mererid Hopwood, and musicians Geraint Lovgreen, Steve Eaves, Ceri Cunnington, Lleuwen Steffan, a Gwyneth Glyn.