Mary May Kelly
Hilda and May were recorded as sisters by HC Millington at Arthur William Kelly's Death in 1965. The only Hilda Kelly was born on 14 May 1891 to George William Kelly and Eliza Moore in Hobart. There are two May's one a Mary May Kelly born to the same parents above. It would seem likely that Arthur William Kelly also had the same parents.
George William Kelly and Eliza Moore were married on 31 Dec 1981 in Hobart 702/1981 RGD 37. George William Kelly was born 24 July 1859 with Father John and Mother Caroline Wallington in Hobart 2702/1859 RGD 33. This couple had 8 children.
We do not know where May lived. She was older than Hilda.