Hi Beryl,
Rose Whittlok baptised 6 June 1624, at Wheathampstead, Hertfordshire. Father recorded as Thomas Whittlok. No Mother's details recorded.
Possible siblings at nearby Harpenden, Hertfordshire:
Elizabeth Whitelock baptised 30 April 1615, Father Thomas
William Whitlock baptised 3 December 1620, Father Thomas Whitlock
Elizabeth Whitlocke baptised 30 December 1621, Father Thomas
Source: England Births & Baptisms 1538-1975, Find My Past.