A very good friend kindly went to SAGHS today and transcribed some relevant certificates for me.
There was not much more than in the indexes - no wonderful little notations, but several were interesting and relevant.
The 19 May 1846 birth of Benjamin Clegg (fiche 9 of 11, record 2701) listed the father Benjamin Clegg as a ploughman, and the informant as W H Clegg, a farmer residing at Reed Beds. The birth was registered on 29 June.
The 21 October 1851 birth of Edward Tuckwell was registered on 29 October, and listed his father Edward as a brickmaker.
The 1869 Edward Tuckwell marriage (fiche ref 281/1) listed him as a bachelor, and a brickmaker, with Ann Clegg as a widow, and both marked rather than signed.
Witnesses don't appear to have any relevance.
The 25 March 1885 birth of Thomas Henry Tuckwell (213/4) listed his father Thomas Tuckwell as a drover. The informant was M M Tuckwell, the mother, of Noarlunga, who marked with x. It was registered on 6 May, and entered at the Registry Office on 8 May.
My friend ran out of time and didn't get to see Edward Tuckwell senior's death certificate. He's going to do it sometime in the future for me.
I now off to try to find W H Clegg.

Dee
