Hello both -
I have Fanny Gamblin b. 1851 Shedfield, Nr. Fareham (Droxford Reg. district) in my tree.
I don't collect in-laws, so I don't know anything about her parents, or siblings, but she married George Vince - they had three children and then George died and Fanny married Alfred Reed in 1890 in Portsea.
Alfred's father John was my grand-dad's brother.
Is Fanny is either of your trees?