A bit of clarification: your great-grandmother Grace Larabee had been a resident of Indianapolis, but actually died at the home of her daughter, Mary Louise, in Tucson, Arizona. A memorial service was held at her Indianapolis Presbyterian church and she is buried with her husband at Restland Cemetery in Mendota, Ill. They had 4 sons and 3 daughters at the time of his death, losing one son, James, later. The daughters were Elizabeth, Jean, and Mary Louise, which differ from your information.
Your great-grandfather worked very hard and completed many sucessful projects, including city water works still in use today. He death at 43 was tragic, but unfortunatly he left little in the way of money for your great grandmother to raise 7 children. She did an excellent job of recovering from the crisis and educating her children, one of which was your grandfather. She lived to age 86. You can be proud of her.
If you have any interest, the father of Charles, James Wool Larabee,(your great-great grandfather) is fairly well documented in Civil War items, where he was awarded the Medal of Honor. (perhaps you live in the south and this is not of interest)
Also, your family has been fairly well documented back to Greenfield Larabee in 1640 in Connecticut.