"Because I Love You So, Machree" was recorded by Frank Ryan on a 78rpm record, sometime between 1930 and 1948, and has been reissued on a CD called Angels Guard Thee. Authorship was credited to someone named McNulty.

It was also recorded by Louis Browne on CD called "Irish Tenor Favorites."

Sheet Music Warehouse has this entry:
Title: Because I Love You So
Author: W&M: E McNulty, T Madden
Description: ©.1928, V Good.
Price: £5.00
Category: 1920's
Stock Reference Number: 2236