Private User can you check your source for the 1704 birthdate you have on the profile?
"a1b2 Anna Grove
» omstr. 1704, x Andries Grove
Judi Marais-Meyer register
GR - C C de Villiers"
The FFYP has it as 1708, also citing C.C. de Villiers & C. Pama, Geslagregisters van ou Kaapse Families II L-R (Cape Town / Amsterdam: A.A. Balkema, 1966), p. 630.
http://www.e-family.co.za/ffy/g11/p11439.htm
Now 1708 makes her 13yrs old when her first child is born. I'd really prefer it to be your date.