Iancu Iarca was born circa 1800 in Râmnicu Sărat, Buzău County, Romania to Oprișan Iarca (1760-c1825) and died circa 1860 Râmnicu Sărat, Buzău County, Romania of unspecified causes.
Iancu Iarca is mentioned in the katagraphy (census) of 1831 as being the son of clucer Iordache Iarca, without any further information about his rank.
References
Siblings
| Name | Birth | Death | Joined with |
| Teodorache Iarca (c1793-c1850) | 1793 Râmnicu Sărat, Buzău County, Romania | 1850 Râmnicu Sărat, Buzău County, Romania | |
| Iordache Iarca (1796-1872) | 1796 Râmnicu Sărat, Buzău County, Romania | 1872 Râmnicu Sărat, Buzău County, Romania | NN Perieţianu |
| Iancu Iarca (c1800-c1860) | 1800 Râmnicu Sărat, Buzău County, Romania | 1860 Râmnicu Sărat, Buzău County, Romania | |
| Scarlat Iarca (1804-1865) | 1804 Râmnicu Sărat, Buzău County, Romania | 1865 Bucharest, Romania | Ecaterina Petrăchescu (c1810-1873) |