Hallo!
I have a small box at home here in Brighton, East Sussex, UK, inscribed with all of the crew's names from this yacht. My late grandfather, Harry Horley, was a ship's captain (he held a square-rigged ticket), who also served at the Battle of Jutland in submarines.
I don't know exactly what he did on board the Hiniesta, but it's possible he may have captained her. During the Second World War, he acted as a Liaison Officer, based mostly at Huntingdon, Cambridgeshire, with the American Eighth Army.
I'd be interested in any articles you may have written or pictures you have of the vessel.
In addition, I have one or two other maritime artefacts relating to MTBs. Harry's son John, my father, joined the RNVR and served aboard MTB671, which was blown up during Coastal Services duties in April 1944, all crew (including him) being lost to an engagement with enemy Moewes.
My e-mail address is:
jon.horley@ntlworld.com if you'd care to get in touch with me. (Incidentally, although named for my father, when I was born in December 1944, I turned out to be a girl, but still got the name Jon!) Best wishes.