I found the following at the Rhode Island State Archives and Public Records Admin. building at 337 Westminster St., Providence, Rhode Island.
GROOM_______________BRIDE________________ KEACH, Reuben A. ______ Lillias P BURNHAM BK: 69 ___ PG: 626 ___ CT: 30 DATE of MARRIAGE: 07/04/1869 Reuben was 25 at time of Marriage - Birthyear 1844 Birthplace - Chepachet, R.I. Lillias. was 18 at time of Marriage - Birthyear 1851 Birthplace - Scituate, R.I. Place of Residence of Groom was Chepachet, R.I. Place of Residence of Wife was Scituate, R.I. Occupation of Groom was Carpenter
Groom's Parents - Benjamin KEACH and Caroline F. UNKNOWN Bride's Parents - Samuel (could be Leonard) BURNHAM and Almira UNKNOWN
Birth Index 1853 -1878
KEECH, Harriet Bertha, F. 06-24-70 Father - Reuben A. Mother - Lillis P. Burnham