Josiah Johnson was married to Charlotte Sweat.
They had two daughters Lucretia (Cresey) Johnson-Magee (born in 1854) and Catherine (Kate) Johnson (born in 1842) that are pictured in the Trinity Photos. They are both in a photo called The "Four Aunts" from Chuck Gassiott and a photo of Cresey & Emma Magee-Johnson.

Robert Moreland contributed this photo. Josiah is His Great Great Grandfather. Cresey is his Great GrandMother
Emma is Robert's Great Aunt. Catherine  is obviously his Great Aunt too.