<sod>Barbara Jefferis was the daughter of Tarlton Jefferis and Lucy Barbara Ingoldsby Jefferis, ''née'' Smythe. Her father was one of Australia's leading analytical chemists, who was in England working as an adviser to the munitions industry during World War I when Barbara was born.<eod>
<sod>Barbara Jefferis was the daughter of (Arthur) Tarlton Jefferis (1884–1965) and Lucy Barbara Ingoldsby Jefferis, ''née'' Smythe (1888–1917). Her father was one of Australia's leading analytical chemists, who was in England working as an adviser to the munitions industry during World War I when Barbara was born.<eod>