Daniel Reardon was a son of Patrick Reardon and Margaret Donoghue of West Cork
Mary Donovan was a daughter of John Donovan and Julia Crowley of West Cork
Daniel Reardon (26), a brakeman, of 68 Linden Street, Springfield and Mary Donovan (24), in housework, of 18 Gougersa Street, Springfield married in Springfield on 14 February 1900 (nimber 272 on the marriage register)
Children born in Springfield:
John Reardon, 18 Dec 1900
Margaret Reardon, 26 Aug 1902
Mary Reardon, 9 Sep 1905
Daniel Reardon, 19 Feb 1909
Julia Reardon, 8 Sep 1912
Census 1900: @ 95 Franklin St
https://www.familysearch.org/ark:/61903/1:1:M9RK-LBF
Census 1910:
https://www.familysearch.org/ark:/61903/1:1:M2JB-4B6
Census 1920:
https://www.familysearch.org/ark:/61903/1:1:MXBC-CCW
Census 1930:
https://www.familysearch.org/ark:/61903/1:1:XQGD-T5R
Census 1940:
https://www.familysearch.org/ark:/61903/1:1:K4K6-4C7