português para inglês Outra Genealogia abbreviations

This is part of the genealogy of a Portuguese noble family:
E.g. Dom XXXX XXXXXXX (f. dp 1730)
Or: Dona XXXX XXXXXXXX (f. dp 28/07/1647).
The "f." is "falecido", so is replaced by "d." in English, but can anyone cast any light on "dp"? "Data provavel"? But some of the dates preceded by "dp" are very precise, though none are recent.
Just for information, we also have "(f. c. 1630)" which is obviously "died circa 1630 - d. c. 1630).