Boniface clashed with Henry's half-brothers, the Lusignans, who arrived in England in 1247 and competed for lands and promotions with the queens' Savoy relatives. Boniface's quarrel with Aymer de Valence over a hospital in Southwark led to the archbishop's palace at Lambeth being plundered and one of Boniface's functionaries being kidnapped. The dispute with Aymer was only settled in early 1253. Boniface was once more absent from England from October 1254 to November 1256, and spent most of that time in Savoy where he attempted to help his brothers rescue their eldest brother Thomas who was being held captive at Turin.