Here’s what we know:  The author of the hymn, “Children of the Heavenly Father”, was Karolina Sindell-Berg (1823-1903).  She was Swedish, small and sickly as a child, and very close to her Lutheran pastor father.  With 650 of her 2,000 hymns appearing in print, she is sometimes called the Fanny Crosby of Sweden.  Among her…