How do we know where Pierre LeClerc was born?

Francogene database has

The family of Jean LECLERC and Marie BLANQUET
[4790] LECLERC, Jean (..), born about 1643 (s=E9p-1703) Dieppe
(Seine-Maritime : 760217), France, died before census 1681
* married before 1664, from Dieppe (Seine-Maritime : 760217), France
BLANQUET, Marie (Adrien BLANQUET dit LAFOUG=C8RE & .. [127713]), born
about 1630 (rec-1666), 1632 (rec-1667), 1631 (rec-1681), 1623
(s=E9p-1709) Dieppe (Seine-Maritime : 760217), France, died 1709-09-10,
buried 1709-09-11 Saint-Pierre I.O. (Qc)
1) Adrien, married Saint-Pierre =CE.O. (Qc) 1694-11-09 Genevi=E8ve
PARADIS
2) Anne, born 1664-09-17, baptized 1664-09-22 Ch=E2teau-Richer
(Qc), died 1699-12-08, buried 1699-12-09 Saint-Laurent I.O. (Qc),
married Saint-Pierre =CE.O. (Qc) 1680-03-05 Jacques BOUFFARD
3) Charles, married Sainte-Famille =CE.O. (Qc) 1696-03-05
Marguerite BAUCHER
4) Marguerite, married Sainte-Famille =CE.O. (Qc) 1677-11-22
Cl=E9ment RUEL
5) Marie Madeleine, buried 1702-10-24 Saint-Pierre I.O. (Qc),
married Saint-Pierre =CE.O. (Qc) 1691-11-05 Ren=E9 PELLETIER
6) Pierre, born Dieppe (Seine-Maritime : 760217), France, married
Saint-Pierre =CE.O. (Qc) 1690-02-07 Isabelle RONDEAU

Otherwise I'm finding that son Pierre was born in 1658 in St-Pierre,
Ile D'orleans. No source for that information, and it does not appear
to be a christening record. (They usually have exact dates.) Could
be estimated from the marriage record, or a census.

I need to identify who was actually the last direct ancestor of this
family born in France. Since both his parents born (and married) in
Dieppe, Normandy, it would be redundant to map them both on my family
origins map if the son born in Dieppe as well!

Is it known when, how and why the parents came to Quebec? Unusual the
parents came together since not from Perche. If we have an
approximate idea when Pierre was born, that should give us an idea in
what country. =20

Yours,
Dora Smith