Ada J. Blenkhorn (1858-1927) was a Canadian-American hymnwriter who wrote the lyrics to many well-known Christian hymns including “Let the Sunshine In” and "Keep on the Sunny Side" also known as "Keep on the Sunny Side of Life" in 1899 with music by J. Howard Entwisle (1866–1903).
At age thirty-four Blenkhorn began a prolific career writing hymns after being encouraged by a friend not to quit.
[2] In 1899 Ada Blenkhorn was inspired to write the Christian hymn, "Keep on the Sunny Side" by a phrase used by her nephew.
Blenkhorn's nephew was disabled and always wanted his wheelchair pushed down "the sunny side" of the street.
[4] She died on May 7, 1927, and was buried in Lake View Cemetery in Cleveland.