John arrived in Utah sometime before his marriage to his second wife, Lovina Wilson, in October 1854. He married his first wife, Nancy Ann Foutz in Nauvoo Illinois in 1841. She came to Utah with her two sons in 1847 with with her father, Jacob Foutz. Further research is needed to determine the year John Martin Brown arrived in Utah, and the name of the pioneer company with which he traveled.
His birth date is from West Weber, Utah Ward records.