I do not go very far back on the Dolan's although I have a Barbara Davis not David. I did not set out to do it, but I think I have the Dolan's tracked from the 1851 census to the 1891 census before I lose track of them.
On the McKenny side, we are descended from a common ancestor, Michael Foran and I believe someone from your family must have contributed to that work in the past. I was actually working on the Edward Dolan piece today when I came across your post. I have not confirmed everything but feel that I am on the right track.
Here is what I have
Edward was married to Margaret Bennett, 28 November 1923 in Onslow, Québec (daughter of John Andrew Bennett [1862 - 1924] and Catherine Cain [1868 - 1935]).
Edward's parents: Michael Dolan (1849 - 1924, may have been born in Bristol per the 1851 census) and Catherine McKenny (1858-1927). Catherine and Michael (and son Charles) are buried in Ste Bridget’s Cemetery, Onlsow Township, Pontiac, County, Quebec. Her grave marker shows a birth of 1855,
http://www.rootsweb.ancestry.com/~cangmg//quebec/pontiac/ons..., dolan10 and
http://www.rootsweb.ancestry.com/~cangmg//quebec/pontiac/ons... Michael Dolan's parents were Patrick Dolan [ born app 1822 in Ireland - died 1916] and Barbara Davis born app 1829 in Ireland), died 1924.
Edward's siblings (some went to Detroit as well) were:
112 i. Mary Helen Dolan born 10 April 1885.
113 ii. Joseph Dolan born 5 September 1886.
114 iii. James Patrick Dolan born 1888.
115 iv. John Michael Dolan born 1890.
116 v. Charles Dolan born 1892. Buried with Catherine and Michael. Born 1892. Died 1956
117 vi. Delia Bridget Dolan born 1895.
118 vii. Thomas Dolan born 1897.
119 viii. Edward Dolan born 1897.
120 ix. Austin Dolan born 1900.
Tracking Edward and Margaret through time, I show that he went to Detroit about 1919, returned to Onslow and married Margaret 28 November 1923, and then Margaret crossing over to Detroit 11 February 1924. Based on the 1930 and 1940 censuses it looks like he five children:
262 Mary Catherine Dolan.
263 ii. John M Dolan.
264 iii. Edward J Dolan.
265 iv. Margaret N Dolan.
266 v. Veronica M Dolan.
If you want to email me, I can share the census information as well as the family tree.
William Foran