He had daughter by first wife.
Three children by Emma
FamilySearch showed this additional information:
Birth - Date: 5 Mar 1894 Place: Schleswig, Crawford, Iowa
32329. Isabella Blackstone MINER
FamilySearch showed this additional information:
Name - Description: Mary Henrietta Isabella Blackstone Miner
Son of Richard Henry Smart and Rose Gale (b. 1868, Michigan).