Hi Again Ydella Yes I have Alice Loader as the daughter of Robert and Ann. It was Alice's middle name that gave me the correct spelling as Ann appears as Loder in some of the documents. According to the 1881 census Ann was a widow, living in St Pancras London, and again the clue that this is "my" Ann Minns, was the sister living with her - Maria Loader.
Living in Australia, research is a bit more difficult, but the next place to look will be for Roberts death cert to see if this gives me any further clues. Also to find Robert and Ann marriage would be a bonus. I looked in the family records centre on my last London visit, but did not find a match.