Complex sentence: Born to Irish immigrants, Kenney apprenticed at age 15 to a plumber and in 1891 began his own plumbing business in Plainfield, New Jersey, gaining patents for flush toilets.
Split into simpler sentences: Born to Irish immigrants, Kenney was apprenticed at age 15 to a plumber. In 1891 he began his own plumbing business in Plainfield, New Jersey and gained patents for flush toilets.