R. C. W. G. Firebrace second s. of Lt-Col George Firebrace, R.A. (1841-1891), of Lismore, Waterden Road, Guildford, Surrey, and Agnes Adela, dau. of Henry Aylmer Porter, of Cranborne Court, Windsor Forest, Berks.
According to Google books sources, Robert Tarver Firebrace (1828-1903) was 'of Elmstone Court' (also, per his probate record, of Victoria, Australia; his son, Cordell William Firebrace [1865-1934], succeeded him at Elmstone Court); he was the elder brother of George Firebrace (above), both being sons of Capt. William Firebrace (1795-1865), of the 58th Regiment; his father was William Newton Firebrace, who according to Burke's Extinct Baronetcies was a member of the Hon. Court of Criminal and Civil Justice at Demerara. This family was said to be a branch of the extinct Firebrace baronets. Based on
thepeerage.com, BP 2003 traces six further generations back, to Robert Firebrace, of Derby (according to Sir Henry Firebrace's ODNB entry, 'successively clerk in the households of Sir Robert Bradbourne and the Roper family of Heanor, Derbyshire'), fl. late 1500s-1600s.
Whilst the baronets descend from this Robert's sixth son Sir Henry Firebrace (1619-1691; his son Basil being created baronet), the family treated here descend from Robert's son John (d. 1650)