I did a little Googling and found a history of St.Matthew's Church, New Norfolk Parish, which confirmed that the minister who oversaw Marcus Haselden's funeral, "W. Garrard" was the vicar at St.Matthew's at the time. Now, that doesn't mean Marcus was buried in the churchyard. The burial ground could have been an entirely different location within the Parish. Even if he was buried at St.Matthew's, I understand most of the grave markers have suffered badly from weathering over the years and are now unreadable.
I also found a couple of brief UK newspaper articles about Marcus' conviction. It seems he had teamed up with a James Green to commit the crime. James Green was transported on the same ship as Marcus but, as yet, I've been unable to find any other records about him (just in case there are inferences about Marcus...for example, it would be fun to know where James Green came from in case it was Lancashire, as was the case with Marcus).
Finally, I took another look at Marcus' Convict Record. It was only after looking at the details for a while that I realized his "absent from muster" occurred while he was with the Constitution Hill Road Company which, in turn, had been his punishment for absconding from Mr William Page's property. Also, I presume his 6-months at Bridgewater were taken from the 12 months he was originally awarded as punishment for absconding?
Kind regards,
Mark