In "Indiana Marriages through 1850" it shows Lawson SIPES marrying Mary M. WALK in Harrison County, IN, on 1 Jan 1837.
Do you know the parents of either of them?
I have another SIPES in my files:
Mary Etta SIPES [b. 1868] who married Jonas FISCUS [b. 1847]in Owen County, IN, on October 07, 1894. Source: Owen County, IN, Index to Marriage Transcript Records, A-Z, 1850-1920, p. 87. Mary Etta also married William SUMMERLOT. Jonas FISCUS' first wife was Mary Ann STICKLES.