The best method is to work backwards from the known to the unknown. There is a GRO Marriage Index entry for 1865 Sep Qtr ref Marylebone 1a 1051 (per FreeBMD), apparently for the wedding of Henry Charles SHAW and Harriet MORRIS. That marriage register is available on Ancestry and the wedding took place on 13 Jul 1865 and Harriet MORRIS declares that her father was George MORRIS, a Livery Stable Keeper. Do you have an Ancestry subscription? If not, contact me off-List and I will send you a copy of this entry to get you started. Unfortunately, no ages are given, apart from the fact that bride & groom were both over 21. The next thing to sort out is whether Harriet Morris was born in Henfield or Ashburnham; they are about 50 miles apart, so it has to be one or the other. Ashburnham was in Battle Union and there is a GRO Birth Index entry for a Harriet MORRIS in 1841 Sep Qtr ref Battle 7 216 (per FreeBMD) and that would be correct for a birth on 30 Jul 1841. Whether this is the correct entry for your family will only become apparent when you have purchased the certificate. The official site for certificate purchases is http://www.gro.gov.uk/gro/content/certificates/default.asp . There isn't a similar registration for a birth in Henfield which was in Steyning Union, but I wouldn't place too much emphasis on this as there are known problems with the early civil registrations. The Henfield parish registers are available to members on the SFHG Frontis site. There is a Harriet MORRIS baptised at Henfield on 14 May 1843, the daughter of Thomas & Ann, cordwainer. There is an appended note that she was born on 14 March 1843. If the Marriage Register & Death Certificate are correct, that the father was George, a Livery Stable Keeper, then this baptism at Henfield must be an incorrect match for your family. Again according to FreeBMD, there is a marriage registration in 1841 Mar Qtr ref Battle 7 281 for George MORRIS and Mary Ann FOSDICK, the probable parents of Harriet MORRIS. Note that it is FOSDICK and not FORDICK, per this index. Obviously, you will need to either purchase the Birth Certificate or do some work on the Ashburnham parish registers and census returns to see if you can pick up the family. The census returns are available on Ancestry and Findmypast (amongst other sites) and your local library may have a subscription. Unfortunately, the Ashburnham registers are not yet available online. Best wishes, Marion Woolgar Bognor Regis, West Sussex SFHG Member No: 3323