I tried to attach their marriage certificate to see if you could decipher it, but it would not allow me to.
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Stefan was born in Warelesyn but I don't know which village.
The name Warelesyn does not sound right, but it is important to find its correct name, because it will help us to identify the correct Grodziec (out of eight possibilities).
I found it, assuming that only the first three and the last two characters of your "Warelesyn" are correct. In other words I was searching for a village name in Poland having this pattern War????yn. To be exact the search GREP pattern, specific to an XML database I was using, was this: >Wa[ąęćśńóżźa-z]+yn\b . For those in similar needs - the database is in the form or two zipped XML files SIMC and TERC, available from Central Statistical Office (GUS):
stat.gov.pl/broker/access/prefile/listPreFiles.jspa
Expecting that the mysterious village is located in Great Poland Province and Konin County, I found their codes - 30 and 10 respectively - from the TERC file. There are several villages listed in SIMC files, that match the above pattern, but only one is located in Konin County. So here comes the disclosure: Wardężyn, repeat WARDĘŻYN (E with ogonek and Z with dot above).
So now we can be sure that your great grandparents, Franciszek and Anna, are from around the village of Grodziec, Gmina Grodziec, Konin County, Greater Poland Voivodeship, in west-central Poland, en.wikipedia.org/wiki/Grodziec,_Greater_Poland_Voivodeship
We also know that your grandfather Stefan was born in Wardężyn, Gmina Rychwał, Konin County, Greater Poland Voivodeship, en.wikipedia.org/wiki/Ward%C4%99%C5%BCyn
And the google maps show that Wardężyn is very close to Grodziec, about 10 km by road.
This is a good start.
BTW, Wardężyn belongs to Grabienice Parish, 4.5 km away. But according to wikipedia the parish keeps only post 1945 archives.
A propos BednarkowBednarkow is not a typical Polish name, although admissible as a Russian male surname. But please check again, whether or not the name is actually written as Bednarkowa, with an "a" at the end. This would make sense, because according to Polish naming tradition the following was an acceptable norm:
Bednarek - a man
Bednarkowa - his wife
Bednarkówna - their daughter
However many a time the surname Bednarek would be equally applied to a man, his wife and their children.
I searched for surname Bednarkow in one of the best databases of marriages, covering Great Poland Province and the years 1800-1899. Unsurprisingly, there was no exact match for that name. There were however 330 approximate matches, which can be broken as follows:
+ Bednarkowa: 31 cases, of which 23 were explicitly declared as widows. Well if a Bednarkowa woman marries a man, she had to be previously married to a man named Bednarek. Makes sense.
+ Bednarkówna: 6 cases. Also makes sense, according to the above rule.
+ Bednarka: 9 cases. Those were also widows, probable after a man named Bednarz.
+ Bednarek: 279 cases, of which 91 referred to brides.
But none of those Bednarkowa, Bednarkówna and Bednarek married any Ratajczyk man in the Great Poland Province.
Among those 330 matches for both men and women, there was not a single Anna. But there were nine Mariannas, one Martianna and one Julianna. The name Agnes/Agnieszka was quite popular too:
+ Agnes Bednarkowa, a widow, married Casimirus Gebler in Sośnica in 1823
+ Agnes Bednarek (43), a widow, married Martinus Krzyżaniak (51), a widower, in Biezdrowo in 1829
+ Agnes Bednarek (21) married Stanislaus Błaszyk (25) in Brodnica in 1862
+ Agnes Bednarek (18) married Franciscus Malek (25) in Brzyskorzystew in 1867
+ Agnes Bednarek (23) married Nicolaus Gronek (28) in Dębno in 1863
+ Agnieszka Bednarek (24) married Tomasz Broniecki (30) in Błaszki, in 1864
+ Agnieszka Bednarek (22) married Andrzej Chmiela (26) in Boleszczyn in 1854
+ Agnieszka Bednarek (17) married Andrzej Zapłotny (22) in Cieszęcin in 1854
See Poznan Marrriage Indexing Project, poznan-project.psnc.pl/project.php