Guys this is speeding up!
Ambly ~ what the connection with the Dobbies in 1891

There does seem to have a gathering of the Clans (euphemistically speaking that is) in Dumbartonshire in the mid 1870s ~ I wonder what brought them all there. We always wondered how Peter had met Ellen, by the sounds of it, she was probably already up in Scotland prior to her marriage in 1876.
Peter and Ellen were certainly in Glasgow by Feb. 1881:
1881 SHIELDS JANET BLACKIE F ST ROLLOX GLASGOW CITY/LANARK 644/06 0261
Added: Address was 54 Albert Street