You sent a message to my cousin, Maureen Parker, in 2007, but Maureen passed away a few years ago, so that is why you did not get a reply. However, I also have the same research interests as Maureen and looked at your posting about our Henry Horrocks vs Henry Fellows Horrocks. Our Henry was born about 1838, possibly in Ashton, England, though later censuses showed different birth locations for some of the other siblings. He was last seen, age 13 on the 1851 census in Woodhouses, Droylesden/Audenshaw area, Lancashire. I checked Ancestry.com and .ca for your Henry and noted that the son, Grange Ross Horrocks seemed to have gone to California. I found a Henry Horrocks of about the right age in Hastings Co. Ontario on the 1901 census and on his death record in 1901, but it appears to be a different Henry Horrocks, as his wife's name was Sarah. It did say on the death record that he was born in Lancaster, England.
I can't say what happened to my Henry Horrocks, but I doubt that he would be a match for your Henry F. Horrocks. In all the children's names in my Horrocks family, there were no middle names given. Also, if your Henry emigrated to Canada in 1850, it couldn't have been my Henry who was still in England in 1851. Horrocks is a very common name in certain parts of Lancashire, especially around Bolton.
Sorry I couldn't be more help and that it took so long for you to get a reply. Good luck with your search.