Here’s the information you requested:
From Cemeteries of Brown County, Illinois
Mt Sterling City Cemetery, pp. 227, 228, 260
John B. Marrett, Corp. Co. H, 137th Ill. Inf., 1843 – 1928
Alice Crawford, wife of John B. Marrett, 1849 – 1948
Lottie, dau. of John and Alice Marret,19 Jan 1871, age 2 yrs
Joseph E. Marrett, 1871 – 1916, son of John & Alice Marrett
[This one may be related]
Cordelia Marrett, wife of James B. Moore 1831 – 1897
James B. Moore, Cpt. Co. G 8th Ill. Cav,1819, 1901
Mounds Cemetery, pp. 298, 304
Joseph Marrett,16 Jan  – 8 Jun 1890 [* book has 1908, not very likely so I changed it to 1808.]
Rebecca Davis, wife of Joseph Marrett, 1 Sep 1874, age 65 y, 10 m, 22 d.
Jane, dau. of Joseph and Rebecca Marrett, 31 Jul1846, age 6 y, 1 m, 22 d.
William James, son of Joseph and Rebecca Marrett, 6 Aug 1846, age 16 yrs.
John B Marrett
Alice Crawford Marrett
Joseph E Marrett
I saw their names listed...so any/all information I can glean from these records would be of great value to me!
I appreciate your effort and help and I thank you in advance!!