I have a Valentine Robar in my ancestry whom I think may be the same one you mentioned. I'll give all info as I know it. If anyone thinks he is the same let me know.
Valentine Robar b.?,Barachois,Nova Scotia,d.16 Feb 1899 m. Catherine McConnell b.?,Rudee Hill?,d.?,on 14 Sept 1841
issue:Susanna Robar "Ann" b.?,Antigonish,Nova Scotia,d.?,m. Dougald MacDonald b.?,Antigonish,Nova Scotia,d.1888,Boston?
issue: Caroline MacDonald b.15 April 1872,Clydesdale,Nova Scotia,d.23 March,1952 m.Robert Vincent Cooper b.10 Oct 1868,Wine Harbour,NS,d.30 July,1930
issue:Margaret Ellen Blanche Cooper b.24 Oct 1904,Wine Harbour,NS,d.21 Nov.1995,Oswego,NY,m.William James Anderson,b.16 Nov.1898,Calais,Maine,d.? on 21 May,1924
(nine other children born to Robert and Caroline)
issue:Mary Theresa Braun,b.2 July,1925,Wine Harbour,NS,m.Ralph Joseph Braun,b.14 Dec,1917,Alberta,Canada,d.31 Aug.2001,on 23 Sept.1944 in Boston,Mass.
issue:Elizabeth Louise Braun"Libbi"(that's me!)b.21 Oct,1954
I have 4 siblings and 3 children. If anyone thinks that is pertinent to their research, please email me at firstname.lastname@example.org
Hope this helps.