“May your troubles be less and your blessings be more” (toast)

An Irish blessing/toast has been cited in print since at least 1991:
   
“May your troubles be less
And your blessings be more
And nothing but happiness
Come through your door.”
 
The author is unknown.
 
     
New York (NY) Times
Grief Ripples Over Bronx for 6 Youths in Crash
By DAVID GONZALEZ
Published: November 11, 1991
(...)
On the living room wall hung a poem set against the backdrop of an Irish country cottage. It read:
 
May your troubles be less
And your blessings be more
And nothing but happiness
Come through your door.
 
Google Books
And at Kildare
By Michelle M. Ducharme
Publisher: 1993.
M.F.A. thesis, Indiana University
1993
Pg. 139:
“May your troubles be less and your blessings be more. And nothing but happiness come through your door.”
     
14 February 1995, Star Tribune (Minneapolis, MN), “lovelines,” pg. 60 (?), col. 7:
WENDY
May your troubles be less & your blessings be more. And nothing but happiness come through your door.
Tim
 
Google Groups: 3do.bad-attitude
A Lot of TOASTS
Gerald Kohler
4/25/99
(...)
May your troubles be less
And your blessings be more.
And nothing but happiness
Come through your door.
 
Google Books
Toasts for Every Occasion
Edited by Jennifer Rahel Conover
New York, NY: New American Library
2001
Pg. 53:
May your troubles be less,
And your blessings be more,
And nothing but happiness come through your door.
IRISH
     
Google Books
Gotta Wanta: Make Changes for Quality of Life;
Inspirational Quotes and Remedies
By Shira Rister
Xlibris Corporation (Xlibris.com)
2012
Pg. ?:
“May your troubles be less. And your blessings be more. And nothing but happiness Come through your door.” Irish saying
 
Google Books
Irish Curses, Blessings, and Toasts:
A Little Book of Wit, Wisdom, and Whimsy
By Nicholas Nigro
Charlottesville, VA: Hampton Roads Publishing Company, Inc.
2018
Pg. 7:
May your troubles be less
And your blessings be more,
And nothing but happiness
Come through your door.