1900 Census, Linganore, MD #35
next door is John H. Key and Ella H [son? - RHS]
all born MD, likewise parents
John Key, 68, Jan 1832m M47, farm laborer
Ella J Key, 70, Jan 1830, M 47, total 12 children, 4 living
Wilson Key 21, Dec 1878, M4, farm laborer
Laura Key 27 (d in law), May 1873, M4, total 1 child, 1 living
[but where is the child <4 yo? - RHS]