Hi amyl,
in their marriage certificate 8/1850:
http://metryki.genealodzy.pl/metryka.ph ... =357&y=422
there are:
groom: Konstanty Kołakowski (a son of Walenty Kołakowski and Agnieszka nee Kołakowska) was born in Jałowa Wieś (it is Ciechanów parish)
bride: Eleonora Kołakowska (a daughter of Franciszek Kołakowski and Marianna nee Kołakowska) was born in Kołaki Wielkie (it is Grudusk parish)
So there is Konstanty's birth certificate 100/1827:
http://metryki.genealodzy.pl/metryka.ph ... 1899&y=152
and there is said that Konstanty Kołakowski (a son of Walenty Kołakowski, 55 years old and Agnieszka nee Kołakowska, 43 years old) was born on 10th April 1827 at 5 a.m.
There is also Eleonora's birth certificate 39/1825:
http://metryki.genealodzy.pl/metryka.ph ... 1722&y=814
and there is said that Eleonora Kołakowska (a daughter of Franciszek Kołakowski, 40 years old and Marianna nee Kołakowska, 36 years old) was born on 18th May 1825 at 3 p.m.
Eleonora's parents got married in 1817 in Kołaki Małe (Grudusk parish), there is their marriage certificate 6/1817:
http://metryki.genealodzy.pl/metryka.ph ... 619&y=1813
groom: Franciszek Kołakowski, 33 years old, a son of Walenty and Marianna nee Pszczółkowska
bride: Marianna Kołakowska, 25 years old, a daughter of Kazimierz Kołakowski and Marianna nee Ostrowska
I think you can try to use geneteka to find other certificates of your ancestors:
http://geneteka.genealodzy.pl/index.php?lang=eng
Pozdrawiam,
Monika