Constantin Cavaler de Flondor was born 14 February 1889 in Roman, Neamț County, Romania to Tudor Flondor (1862-1908) and Maria Ciuntu (1865-1950) and died 15 May 1942 Chernivtsi, Chernivtsi Oblast, Ukraine of Myocardial infarction.
Siblings
| Name | Birth | Death | Joined with |
| Constantin Flondor (1889-1942) | 14 February 1889 Roman, Neamț County, Romania | 15 May 1942 Chernivtsi, Chernivtsi Oblast, Ukraine | |
| Isabella Nectara Flondor (1890-1985) | 1890 | 15 May 1985 New York City, New York, United States | |
| Gheorghe Flondor (1892-1976) | 31 August 1892 | 26 April 1976 Bucharest, Romania | Lucia Stephanovici (c1905-c1985) |
| Florica Flondor (1897-1983) | 13 November 1897 | 7 February 1983 Bucharest, Romania | Aurel Racovitză (1890-1957) |
Residences
Footnotes (including sources)