 Additionally, Henry's niece April (Deena Freeman) comes from Delaware to live with the Rush family.The season concludes with Muriel giving birth to a son, Andrew (later played regularly by twins William and Michael Cannon from 1983 to 1984).For the third season, April departs and the character of Muriel's mother, Iris Martin (Audrey Meadows) is added in order to help take care of Andrew.