The GRATWICKE Family are very numerous in the geographical area now covered by Horsham District Council and many were influential people of their time as well. I have seen a variety of pedigrees for them over the years and it seems to me that it was a family comprising a number of small groups that have never been put together to form a single family tree. Mind you, the 19th and early 20th Century genealogists didn't have access to the resources that we have today, notably the Census returns. You might like to check the following references: 1 "Sussex Genealogies, Horsham Centre" by John Comber; 2 "Pedigrees of the Families in the County of Sussex" by William Berry; 3 Sussex Archaeological Collections, volume LX contains an article by John Comber in which he tries to pull together some of the strands of his research by looking at their descent via Manorial records. However, you do need to bear in mind that all these texts will contain errors and so facts will need to be verified by consulting the original records. Best wishes, Marion Woolgar Bognor Regis, West Sussex SFHG Member No: 3323