Anthony I’Anson, 46 who lives in Horsepond Road and works in telecommunications, was co-opted following a unanimous vote in favour by the council.
He will replace either David Richens or Colin Reynolds, whoÂ both stood down in May for personal reasons.
Councillor I’Anson is to be a member of the council’s memorial hall field working party that will oversee the development of sports and recreation facilities on land off Reades Lane.
This is linked to a proposed housing development on Bishopswood Middle Field. Linden Homes and landowner Patricia Pelly have applied to South Oxfordshire District Council for planning permission for 50 homes on the site.
The Sonning Common neighbourhood plan proposes that access to the memorial hall field should be at the south-west corner and that there should be sports pitches, a community hall and at least 60Â parking spaces. Any work on the site would be funded by grants and payments made by developers.
The other members of the working party are Alan Gibbon (Kidmore End War Memorial Hall),Â Diana Pearman (neighbourhood development plan working party), parish councillorÂ Leigh Rawlins, parish clerkÂ Philip Collings, deputy parish clerkÂ Ros Varnes and a govenor of Chiltern Edge School.