There is a possible birth for Elizabeth SLEIGH on NSW BMD - V1822616 6/1822 SLEIGH Elizabeth - no father recorded - Mother: Harriett
Could be possible her mother was unmarried when she gave birth but married father or someone else same year - see possible marriage of Harriett SLEIGH to a KENNIWELL.Perhaps Edward SLEIGH was brother or father of Harriet SLEIGH.
NSW BMD site
V18223050 3B/1822 KENNIWELL, George married SLEIGH,HarrietteDistrict: CA(CA = Church of England Sydney, St Phillip's) V1822249 8/1822 KENNIWELL, George married SLEIGH, Harriet District: CA(CA = Church of England Sydney, St Phillip's)
Possible Deaths V18421126 26B/1842KENNEWELL, GEORGEAGE 43 V18491299 34B/1849KENNIWELL,HARRIETAGE 59
Note Found mention at National Australian Library Title Chronicle of George Kenniwell 1799-1842 /? [compiled, edited and published by W. E. Johns]. Author Johns, W. E. Published Campbell, A.C.T. : W. E. Johns, 1993. Physical Description ix, 60 p. : ill., maps ; 30 cm. Subjects Kenniwell, George, 1799-1842. Convicts -- Australia -- Biography. New South Wales -- Genealogy.