Hi kadveritas
Since my original post in 2010 I haven't got any further with confirming evidence of parents for dear Robert Geak. Neither have I found his marriage to Frances (UNKNOWN).
Just as you have I have noted the baptism of Robert Geak on 3 Apr 1621 at St Germans, parents John & Thomasin Geake ..... and siblings Thomasin 1626, Joan 1628, John 1631 and possible earlier John 1618 who must have died (all baptised St Germans). But am still feeling unsure.
I can't find any other baptism of a Robert Geak(e)/Geke in the area in the right timeframe unless my timeframe is completely out of whack which would occur if Robert's marriage to Frances (UNKNOWN) was a second marriage ......****** refer below Note
Marriage for John Geake and Thomasin Hancocke 27 Apr 1613 St Germans.
Note: There are these Robert Geake marriages ....... which makes me ponder
1621 St Germans, Robert Geake m Joan Little
1625 Menheniot, Robert Geake m. Tamsin Hen(d)woode (from St Germans)
1630 Bodmin, Robert Geake m. Jone Menheneck