Wilhelm Rudnick was a German organist and church musician and lived in the Romantic era. His organ works are typical examples of that romantic period between (roughly) Mendelssohn and Reger. I recorded one of his 30 Choral-Vorspiele. This piece is more leaning towards the baroque period.
The hymns 'Wie wohl ist mir, o Freund der Seelen' and 'Die Tugend wird durchs Kreuz geübet' share the same tune.