There is a Nellie Grubb arriving in London from Hobart in 1925.
It says
Wm C Grubb Born about 1844 Proposed residence in UK 135 Clare Street, Northampton, retired merchant
Nellie Grubb Born about 1873, Rank or profession = DD (??)
Last permanent country of residence Tasmania.
I think he is William Coleman Grubb. Born in Shutlanger 1843. Married Sarah Ann Parler in Hobart in 1868. They had 4 children, one being Ellen (Nellie I assume) born in 1872. She died in Queensland in 1940. I googled William Coleman Grubb and found a Stoke Bruerne family website that said this family moved to Tasmania in 1860/1870 and that William came back for a visit in 1925, age 80 with his daughter Nellie. So I think this is the one you are looking for.
So if you know who was living at 135 Clare Street in 1925 you might be able to work out the family connection??
Debbie