Of where/from where
I think you mean Donde which is Where (in english)
where is my husband
'unn' - ?'donde vives' = where (do) you live
The indefinite article "de" in Spanish is analogous to the indefinite article "of" in English.
de means of in spanish
De.
Trienta de octubre translates from Spanish to mean the 30th of October.
El = The De = Of
de que: from what
De = from. Para = to.
Of.
of the