Chappell Family - Linden (Genesee County) Mich

I recently visited Fairview Cemetary in Linden (Genesee Co) MI and found my great great grandparents' graves.Luther B Chappell (1881-1944) was married to Mabel A(1881-1967).

There were other Chappells buried next to them - William H (1879-1933) and his wife Ella M (1876-1935).There was also a Velma Chappell (1911-1912).Does anyone have more information on William & Ella or their family?I think William may have been Luther's brother.