I accessed the records from Ancestry but went and looked it up on FamilySearch for you:
https://familysearch.org/pal:/MM9.3.1/TH-266-11681-190692-86...Here's a translation of the marriage record:
In the year 1825 on the 13th of October at 10
in the morning, in front of us, Mayor and civil registrar
of the town of Luxembourg, Grand-Duchy of Luxembourg, have appeared
Jean Mertes, gardener, age 39 years,
born in Luxembourg the 5 January 1786, evidenced by certificate
issued by us;
residing in Luxembourg, adult son of the deceased
Mathias Mertes, gardener, who lived in this town and died 30
January 1820, also evidenced by certificate issued by us;
and of Marguerithe Jungblut, widow of the said Mathias Mertes, without profession, residing
in the Bellerue part of this town, consenting to this marriage act by a certificate received
and recorded by the notary François Xavier Henschling, of this town, 12 October of the present year;
et Anne Thorn, without profession, age 25 years,
born in Bous, in December 1799, certified by
a sworn affidavit by the justice of the peace of the Canton of Remich, 8 September
last, the document was approved by the district court
of this town; residing in Bous, adult daughter of the deceased Pierre Thorn, labourer who lived in Bous and died 1 frimaire year 14 of the Republic, evidenced by certificate issued by the mayor of said place,
and of Marie Delles, widow of the said Pierre Thorn, without profession,
residing in Bous, and present and consenting
which requires us to proceed with the celebration of the marriage plans between them, whose publications were made, namely: in Luxembourg and in Bous on the Sundays of 21 and 28 August
last, at noon; the last were certified and delivered by the
mayor of Bous,
No opposition to the said marriage has been served, granting their petition, after reading
all the parts mentioned above and Chapter 6 of Title of the Civil Code on Marriage, we have asked the groom and the future wife seperately if they want to take each other as husband and wife,
and responding affirmatively declare in the name of the law that Jean Mertes
and Anne Thorn are joined in marriage.
All of this has taken place in the presence of the witnesses referred to below, namely:
of Nicolas Reuter, age 39, a baker residing in Luxembourg,
of Joseph Weyersbach, age 64, a baker residing in Luxembourg,
of Michel Fendius, age 36, a baker residing in Luxembourg,
and Joseph Faust, age 60, caretaker of the Town Hall, residing in Luxembourg.
Who, after they had been read this, have signed with us and
the contracted party, except the wife, her mother and the second witness who
have declared they do not know how to sign,
made at the Town Hall this day, month, year and time as stated.