[3] In 1684 he married Jane, widow of Joseph Saunders and daughter of the wealthy lawyer and politician Henry Whitfield and his wife Hester Temple, who died in 1712.
[5] Sir Robert is mentioned in Teague Land: or A Merry Ramble to the Wild Irish (1698) and was a descendant of Rory Ó Duinn, lord of Úi Riagán in Laois.
His branch of the family successfully made the transition from Gaelic-Irish to Anglo-Irish culture, and were based at Brittas.
A lawsuit concerning earlier generations of the family is preserved in The O Doyne Manuscript, which offers unique insight into Gaelic-Irish land use.
In 1698 the Irish-born publisher and author John Dunton gave a favourable picture of the Irish judiciary, including Doyne: "men whose reputation is such that no one complains of them".