People   (Re-unions, trace old friends and relatives.)

Your best bet, Threlfallia, is the marriage certificate of John Rutter and Elizabeth Ellen. With a bit of luck her mother might have revealed the father's name and it may be on the certificate. I somehow don't think it was Alfred Robinson.
On the other hand, it's not always so clear cut. My grandmother's father died early and she later had a stepfather. She put his name down on her marriage certificate although he had not even arrived in Wigan at the time of her birth. So Alfred may be down as the father. Difficult, difficult...