Sir John Dongan, 2nd Baronet (1603–1650)[a] was a member of the Irish Parliament.
Dongan was born into an old Gaelic Norman (Irish Catholic) family in Castletown Kildrought (now Celbridge), County Kildare, in the Kingdom of Ireland.
[2] His maternal grandparents were Robert Rochfort of Kilbryde, County Meath and Elinor Dillon (a daughter of Sir Lucas Dillon, Chief Baron of the Exchequer of Ireland).
[3] His paternal grandparents were Margaret (née Forster) Dongan and John Dongan, originally of Fishamble Street, Dublin, a civil servant in the Irish Government who became wealthy and acquired substantial estates in County Kildare.
[5] Together, they were the parents of at least ten children, including:[2] Sir John died in 1650 but his will was not proved until 1663.