I have been collecting Lewkenor references wherever I have found them; perhaps you already have these from Comber's Sussex Geneaologies (Lewes Centre): Sir Thomas Lewknor was the father of: 1. Roger Lewkenor of Trotton (Comber P.150, VIII) 2. Sir John 3. Richard of Brambletye, Esq., MP Horsham 1459, Shoreham 1468 and E.Grinstead 1473 & 78, (?Inq PM 1506). N.B. nothing for 1491 and it is a big jump from 1478. 4. Walter of Walberton (P.156, AI) 5. Nicholas of Kingston Bowsey (P.158, Lewkenor of Kingston Bowsey I). If Richard of Brambletye is the Richard you are researching then he had nephews: Humphrey, son of Walter of Walberton and Edward, son of Nicholas of Kingston Bowsey.I have no note as to whether these two sat in parliament. I shall be visiting Horsham in the next few weeks.If you care to give me the seats of Edward and Humphrey, I could dig around. Best wishes, Gillian.