Henry Yorke Sparks was my great, great, great grandfather. We have very sketchy details about him, all according to my grandmother's family history. However we know that he was married to Anna (or Hannah). He came to Adelaide on the Royal Admiral which sailed from Gravesend on 25th September 1837 with 208 other passengers. They had 2 boys travelling with them (Henry 6yo and another boy who was 20 months old). Henry was listed as a builder and carpenter. They arrived in Adelaide in January 1938, firstly living in Adelaide and then moving to Glenelg.
We don't have much more information... But I guess if Henry is your relative, that we must be distantly related!
hope that info helps!